Multi-channel pressure transmitter

Abstract

The invention provides a multichannel pressure transmitter, and relates to the technical field of transformer pressure monitoring. The transmitter comprises a transformer, a plurality of pressure acquisition modules, a plurality of safety monitoring computers and a pressure analysis computer, the plurality of pressure acquisition modules are connected with the same pressure acquisition interface of the transformer, and the plurality of pressure acquisition modules are arranged in parallel; the pressure acquisition modules are connected with the safety monitoring computers, and the pressure acquisition modules are in one-to-one correspondence with the safety monitoring computers; and the plurality of safety monitoring computers are connected with the pressure analysis computer. According to the pressure transmitter, redundant pressure monitoring and effective pressure monitoring analysis can be realized without adding a signal output interface.

Description

Technical Field

[0001] The invention relates to the technical field of transformer pressure monitoring, and in particular to a multi-channel pressure transmitter. Background Art

[0002] With the development of society and the advancement of technology, the automation and intelligence of industrial control systems are becoming increasingly higher. To achieve high automation and intelligence, an automated control system requires multiple different types of sensors to obtain relevant automated control information, such as temperature sensors, pressure transmitters, speed sensors, and acceleration sensors. In order to ensure the security, reliability, and accuracy of the collected information, it is often necessary to install multiple / multi-channel sensors to collect the same information, which brings inconvenience to the installation, use, and maintenance of the equipment.

[0003] At present, there are two types of domestic industrial pressure transmitters: voltage type and current type. However, each sensor only provides one pressure signal output. When the safety computer system needs to collect pressure information, each system / machine needs to be connected to a pressure transmitter. This method brings problems such as increased operation and maintenance workload and cost.

[0004] Therefore, designing a multi-channel pressure transmitter that can achieve redundant pressure monitoring and effective pressure monitoring and analysis without increasing the signal output interface is an urgent problem to be solved. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-channel pressure transmitter, which connects the same pressure collection interface on the transformer by setting up multiple pressure collection modules in parallel, which avoids the increase of system cost and maintenance workload caused by opening multiple pressure collection interfaces on the transformer, and also avoids the impact on the reliability of transformer operation. On this basis, redundant pressure monitoring can fully guarantee effective real-time monitoring and fault warning of transformer pressure, ensuring long-term stable operation of the transformer.

[0006] In a first aspect, the present invention provides a multi-channel pressure transmitter, comprising: a transformer, multiple pressure acquisition modules, multiple safety monitoring computers and a pressure analysis computer; the multiple pressure acquisition modules are all connected to the same pressure acquisition interface of the transformer, and the multiple pressure acquisition modules are arranged in parallel; the pressure acquisition modules are connected to the safety monitoring computer, and the pressure acquisition modules and the safety monitoring computers correspond one to one; the multiple safety monitoring computers are all connected to the pressure analysis computer.

[0007] In the present invention, the pressure transmitter is connected to the same pressure collection interface on the transformer by setting up multiple pressure collection modules in parallel, which avoids the increase of system cost and maintenance workload caused by opening multiple pressure collection interfaces on the transformer, and also avoids the impact on the reliability of transformer operation. On this basis, redundant pressure monitoring can fully guarantee effective real-time monitoring and fault warning of transformer pressure, ensuring long-term stable operation of the transformer.

[0008] As a possible implementation manner, the number of pressure acquisition modules is three and the number of safety monitoring computers is three.

[0009] In the present invention, three pressure acquisition modules are used to achieve reliable pressure monitoring and control. When a pressure module has abnormal data acquisition or the module and computer fail to operate, normal time-limited operation can still be performed to ensure normal pressure monitoring and control.

[0010] As a possible implementation method, the multi-channel pressure transmitter is configured as follows: three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: if the self-tests of the three safety monitoring computers all show normal results, the operation information of the corresponding pressure acquisition modules is obtained from different safety monitoring computers for analysis: if the operation information of the three pressure acquisition modules obtained is normal, the pressure data obtained by the three safety monitoring computers from the corresponding pressure acquisition modules are analyzed as follows: when the three pressure data collected are normal, the average is used as the pressure monitoring output; when there is one pressure data among the three pressure data collected and the difference between it and the other two pressure data exceeds the pressure comparison threshold, the average of the other two pressure data is used as the pressure monitoring output; when the difference between the three pressure data collected exceeds the pressure comparison threshold, a pressure monitoring fault signal is output.

[0011] In the present invention, for the pressure monitoring and control of the three margins, it is also necessary to determine whether the pressure monitoring computer and the pressure acquisition module are operating normally when performing pressure monitoring. Therefore, it is necessary to first obtain the self-test results of the pressure monitoring computer. After determining that the self-test of the pressure monitoring computer is normal, the pressure monitoring computer analyzes and determines whether the pressure acquisition module is operating normally. After all the tests are completed, the pressure data collected by the pressure acquisition module are analyzed. It can be understood that when the pressure data collected by the three pressure acquisition modules are normal, the average value is used as the normal output. If only one pressure data is abnormal, the normal pressure monitoring test can be guaranteed. The pressure comparison threshold can be set according to the actual situation, or it can be determined based on the pressure history data of the monitored pressure location through big data analysis. Only when it is determined that only one pressure acquisition data is normal will the fault detection signal be output, so there is a good margin in pressure monitoring.

[0012] As a possible implementation method, the multi-channel pressure transmitter is configured as follows: three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: if the self-tests of the three safety monitoring computers all show normal results, the operating information of the corresponding pressure acquisition modules is obtained by different safety monitoring computers for analysis: if there is a fault in the operating information of the three pressure acquisition modules obtained, the pressure data obtained from the corresponding pressure acquisition modules by the other two safety monitoring computers are analyzed as follows: when the two pressure data collected are normal, the average is used as the pressure monitoring output; when the difference between the two pressure data collected exceeds the pressure comparison threshold, the pressure monitoring fault signal is output.

[0013] In the present invention, for a system with three sets of pressure monitoring modules, when the pressure monitoring computers are all normal, the pressure monitoring fault judgment on whether the pressure acquisition module is operating normally is the same as the fault analysis and judgment on the pressure monitoring data collected by the pressure acquisition module. A fault warning signal will only be issued when one pressure acquisition module is normal.

[0014] As a possible implementation method, the multi-channel pressure transmitter is configured as follows: three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: if two of the three safety monitoring computers' self-tests show normal results, then different safety monitoring computers obtain operation information of corresponding pressure acquisition modules for analysis: if the operation information of the two pressure acquisition modules obtained are both normal, then the pressure data obtained from the corresponding pressure acquisition modules by the two safety monitoring computers are analyzed as follows: when both pressure data collected are normal, the average is used as the pressure monitoring output; when the difference between the two pressure data collected exceeds the pressure comparison threshold, a pressure monitoring fault signal is output.

[0015] In the present invention, for a system with three sets of pressure monitoring modules, the corresponding relationship between the normality of the pressure monitoring computer and the failure of the pressure monitoring is the same as the normality of the pressure acquisition module and the failure of the pressure monitoring. The difference is that even if the pressure monitoring data collected by the three pressure acquisition modules are normal, the pressure monitoring data cannot be used for normal pressure monitoring analysis due to the self-detection failure of the pressure computer.

[0016] As a possible implementation method, the multi-channel pressure transmitter is configured as follows: three safety monitoring computers perform self-test and provide self-test results to the pressure analysis computer: if only one of the three safety monitoring computers shows normal self-test or only one of the three pressure acquisition modules' operating information is normal, a pressure monitoring fault signal is output.

[0017] In the present invention, when there is only one object in any type of the pressure monitoring computer and the pressure acquisition module that can operate normally or does not operate normally, it is necessary to determine that a system failure has occurred and an early warning is required.

[0018] As a possible implementation, the number of pressure acquisition modules is two and the number of safety monitoring computers is two.

[0019] In the present invention, of course, in order to reduce the cost of pressure monitoring to a certain extent and ensure that the pressure monitoring system can operate stably for a long time, a double-redundant pressure monitoring system can also be used to achieve reliable operation of pressure monitoring.

[0020] As a possible implementation method, the multi-channel pressure transmitter is configured as follows: two safety monitoring computers perform self-test and provide self-test results to the pressure analysis computer: if the self-tests of the two safety monitoring computers are both normal, the operation information of the corresponding pressure acquisition modules is obtained by different safety monitoring computers for analysis: if the operation information of the two pressure acquisition modules obtained is normal, the pressure data obtained by the two safety monitoring computers from the corresponding pressure acquisition modules are analyzed as follows: when the two pressure data collected are normal, the average is used as the pressure monitoring output; when the difference between the two pressure data collected exceeds the pressure comparison threshold, the pressure monitoring fault signal is output.

[0021] In the present invention, for the redundant pressure monitoring system, under the condition that the pressure monitoring computer and the pressure acquisition module can operate normally, for the analysis of the collected pressure data, as long as the difference between the two pressure acquisition data does not exceed the set threshold, it can be judged that the two pressure acquisition data are normal, and the average is used as the output for pressure indication and analysis.

[0022] As a possible implementation method, the multi-channel pressure transmitter is configured as follows: two safety monitoring computers perform self-test and provide the self-test results to the pressure analysis computer: if the self-tests of the two safety monitoring computers both show normal, then different safety monitoring computers obtain the operating information of the corresponding pressure acquisition modules for analysis: if the operating information of the two pressure acquisition modules obtained shows that only one is normal, then a pressure monitoring fault signal is output.

[0023] In the present invention, for the double-redundant pressure monitoring system, if the pressure monitoring computers are normal but any one or two of the pressure acquisition modules fail, the system will enter the failure mode for failure pre-tightening.

[0024] As a possible implementation, the multi-channel pressure transmitter is configured as follows: two safety monitoring computers perform self-test and provide the self-test results to the pressure analysis computer: if only one of the two safety monitoring computers performs self-test normally, a pressure monitoring fault signal is output.

[0025] In the present invention, for the dual-redundancy pressure monitoring system, if any one or both of the pressure monitoring computers have a self-test abnormality, it is necessary to directly enter the fault warning program.

[0026] The beneficial effects of a multi-channel pressure transmitter provided by the present invention are:

[0027] The pressure transmitter connects the same pressure collection interface on the transformer by setting up multiple pressure collection modules in parallel. On the one hand, it avoids the increase of system cost and maintenance workload caused by opening multiple pressure collection interfaces on the transformer, and also avoids the impact on the reliability of transformer operation. On this basis, redundant pressure monitoring can fully guarantee the effective real-time monitoring and fault warning of transformer pressure, ensuring the long-term stable operation of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of a triple-redundant structure of a multi-channel pressure transmitter provided in an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of a double-redundant structure of a multi-channel pressure transmitter provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] With the development of society and the advancement of technology, the automation and intelligence of industrial control systems are becoming increasingly higher. To achieve high automation and intelligence, an automated control system requires multiple different types of sensors to obtain relevant automated control information, such as temperature sensors, pressure transmitters, speed sensors, and acceleration sensors. In order to ensure the security, reliability, and accuracy of the collected information, it is often necessary to install multiple / multi-channel sensors to collect the same information, which brings inconvenience to the installation, use, and maintenance of the equipment.

[0033] At present, there are two types of domestic industrial pressure transmitters: voltage type and current type. However, each sensor only provides one pressure signal output. When the safety computer system needs to collect pressure information, each system / machine needs to be connected to a pressure transmitter. This method brings problems such as increased operation and maintenance workload and cost.

[0034] refer to Figure 1 The embodiment of the present invention provides a multi-channel pressure transmitter, which connects the same pressure collection interface on the transformer by setting up multiple pressure collection modules in parallel. On the one hand, it avoids the increase of system cost and maintenance workload caused by opening multiple pressure collection interfaces on the transformer, and also avoids the impact on the reliability of transformer operation. On this basis, redundant pressure monitoring can fully guarantee the effective real-time monitoring and fault warning of transformer pressure, ensuring the long-term stable operation of the transformer.

[0035] The pressure transmitter includes a transformer, multiple pressure acquisition modules, multiple safety monitoring computers and a pressure analysis computer; the multiple pressure acquisition modules are all connected to the same pressure acquisition interface of the transformer, and the multiple pressure acquisition modules are arranged in parallel; the pressure acquisition modules are connected to the safety monitoring computer, and the pressure acquisition modules and the safety monitoring computers correspond one to one; the multiple safety monitoring computers are all connected to the pressure analysis computer.

[0036] The present invention provides two types of redundant pressure monitoring systems:

[0037] The first type: There are three pressure acquisition modules and three safety monitoring computers. Using three pressure acquisition modules can achieve reliable pressure monitoring and control. When a pressure module has abnormal data acquisition or the module and computer fail to operate normally, normal time-limited operation can be performed to ensure the normal operation of pressure monitoring and control.

[0038] The multi-channel pressure transmitter is configured as follows: three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: if the self-tests of the three safety monitoring computers all show normal results, the operation information of the corresponding pressure acquisition modules is obtained from different safety monitoring computers for analysis: if the operation information of the three pressure acquisition modules obtained is normal, the pressure data obtained from the corresponding pressure acquisition modules by the three safety monitoring computers are analyzed as follows: when the three pressure data collected are normal, the average is used as the pressure monitoring output; when there is one pressure data among the three pressure data collected and the difference between it and the other two pressure data exceeds the pressure comparison threshold, the average of the other two pressure data is used as the pressure monitoring output; when the difference between the three pressure data collected exceeds the pressure comparison threshold, a pressure monitoring fault signal is output.

[0039] For the pressure monitoring and control with three margins, it is also necessary to determine whether the pressure monitoring computer and the pressure acquisition module are operating normally when performing pressure monitoring. Therefore, it is necessary to first obtain the self-test results of the pressure monitoring computer. After determining that the self-test of the pressure monitoring computer is normal, the pressure monitoring computer analyzes and determines whether the pressure acquisition module is operating normally. After all tests are completed, the pressure data collected by the pressure acquisition module is analyzed. It can be understood that when the pressure data collected by the three pressure acquisition modules are normal, the average value is used as the normal output. If only one pressure data is abnormal, the normal pressure monitoring test can be guaranteed. The pressure comparison threshold can be set according to the actual situation, or it can be determined based on the big data analysis of the pressure history data of the monitored pressure location. Only when it is determined that only one pressure acquisition data is normal will the fault detection signal be output, so there is a good margin in pressure monitoring.

[0040] The multi-channel pressure transmitter is configured as follows: three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: if the self-tests of the three safety monitoring computers all show normal results, the operating information of the corresponding pressure acquisition modules is obtained by different safety monitoring computers for analysis: if there is a fault in the operating information of the three pressure acquisition modules obtained, the pressure data obtained from the corresponding pressure acquisition modules by the other two safety monitoring computers are analyzed as follows: when the two pressure data collected are normal, the average is used as the pressure monitoring output; when the difference between the two pressure data collected exceeds the pressure comparison threshold, a pressure monitoring fault signal is output.

[0041] For a system with three sets of pressure monitoring modules, when the pressure monitoring computers are all normal, the pressure monitoring fault judgment on whether the pressure acquisition module is operating normally is the same as the fault analysis and judgment on the pressure monitoring data collected by the pressure acquisition module. A fault warning signal will only be issued when one pressure acquisition module is normal.

[0042] The multi-channel pressure transmitter is configured as follows: three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: if two of the three safety monitoring computers' self-tests show normal results, then different safety monitoring computers are used to analyze the operating information of the corresponding pressure acquisition modules: if the operating information of the two pressure acquisition modules obtained are both normal, then the pressure data obtained from the corresponding pressure acquisition modules by the two safety monitoring computers are analyzed as follows: when both pressure data collected are normal, the average is used as the pressure monitoring output; when the difference between the two pressure data collected exceeds the pressure comparison threshold, a pressure monitoring fault signal is output.

[0043] For a system with three sets of pressure monitoring modules, the corresponding relationship between the normality of the pressure monitoring computer and the failure of the pressure monitoring is the same as the normality of the pressure acquisition module and the failure of the pressure monitoring. The difference is that even if the pressure monitoring data collected by the three pressure acquisition modules are normal, the pressure monitoring data cannot be used for normal pressure monitoring analysis due to the self-test failure of the pressure computer.

[0044] The multi-channel pressure transmitter is configured as follows: three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: if only one of the three safety monitoring computers shows normal self-tests or only one of the three pressure acquisition modules obtains normal operating information, a pressure monitoring fault signal is output. When only one of the pressure monitoring computers and pressure acquisition modules can operate normally or does not operate normally, it is necessary to determine that a system failure has occurred and an early warning is required.

[0045] The second type: the number of pressure acquisition modules is two, and the number of safety monitoring computers is two. Of course, in order to reduce the cost of pressure monitoring to a certain extent and ensure that the pressure monitoring system can operate stably for a long time, the use of a double-redundancy pressure monitoring system can also achieve reliable operation of pressure monitoring.

[0046] The multi-channel pressure transmitter is configured as follows: two safety monitoring computers perform self-test and provide the self-test results to the pressure analysis computer: if the self-tests of the two safety monitoring computers are both normal, the operation information of the corresponding pressure acquisition modules is obtained by different safety monitoring computers for analysis: if the operation information of the two pressure acquisition modules obtained is normal, the pressure data obtained by the two safety monitoring computers from the corresponding pressure acquisition modules are analyzed as follows: when the two pressure data collected are normal, the average is used as the pressure monitoring output; when the difference between the two pressure data collected exceeds the pressure comparison threshold, the pressure monitoring fault signal is output.

[0047] For the dual-redundancy pressure monitoring system, under the condition that both the pressure monitoring computer and the pressure acquisition module can operate normally, for the analysis of the collected pressure data, as long as the difference between the two pressure acquisition data does not exceed the set threshold, it can be judged that the two pressure acquisition data are normal, and the average is used as the output for pressure indication and analysis.

[0048] The multi-channel pressure transmitter is configured as follows: two safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: if the self-tests of the two safety monitoring computers are both normal, different safety monitoring computers are obtained to analyze the operation information of the corresponding pressure acquisition modules: if the operation information of the two pressure acquisition modules obtained only shows that one is normal, a pressure monitoring fault signal is output. For a two-redundancy pressure monitoring system, if the pressure monitoring computers are both normal and any one or two of the pressure acquisition modules fail, the fault mode must be entered for fault pre-tightening.

[0049] The multi-channel pressure transmitter is configured as follows: two safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: if only one of the two safety monitoring computers is normal, a pressure monitoring fault signal is output. For a dual-redundancy pressure monitoring system, if any one or both of the pressure monitoring computers have an abnormal self-test, then it is necessary to directly enter the fault warning program.

[0050] In summary, the multi-channel pressure transmitter provided by the embodiment of the present invention has the following beneficial effects:

[0051] The pressure transmitter connects the same pressure collection interface on the transformer by setting up multiple pressure collection modules in parallel. On the one hand, it avoids the increase of system cost and maintenance workload caused by opening multiple pressure collection interfaces on the transformer, and also avoids the impact on the reliability of transformer operation. On this basis, redundant pressure monitoring can fully guarantee the effective real-time monitoring and fault warning of transformer pressure, ensuring the long-term stable operation of the transformer.

[0052] In the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved by means of the arrangement order of each piece of information agreed in advance (for example, specified by the protocol), thereby reducing the indication overhead to a certain extent. At the same time, the common parts of each piece of information can also be identified and indicated uniformly to reduce the indication overhead caused by indicating the same information separately.

[0053] In addition, the specific indication method may also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof. The specific details of the various indication methods can refer to the prior art and will not be repeated herein. As can be seen from the above, for example, when it is necessary to indicate multiple information of the same type, different indication methods may be used for different information. In the specific implementation process, the desired indication method can be selected according to specific needs. The embodiment of the present application does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present application should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.

[0054] It should be understood that the information to be indicated can be sent as a whole, or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in the embodiment of the present application. Among them, the sending period and / or sending time of these sub-information can be pre-defined, for example, pre-defined according to the protocol, or can be configured by the sending end device by sending configuration information to the receiving end device.

[0055] "Pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device, and the embodiments of the present application do not limit the specific implementation method. Among them, "saving" can mean saving in one or more memories. The one or more memories can be set separately or integrated in an encoder or decoder, a processor, or a communication device. The one or more memories can also be partially set separately and partially integrated in a decoder, a processor, or a communication device. The type of memory can be any form of storage medium, which is not limited by the embodiments of the present application.

[0056] The "protocol" involved in the embodiments of the present application may refer to a protocol family in the communication field, a standard protocol with a similar protocol family frame structure, or a related protocol used in future communication systems, and the embodiments of the present application do not make specific limitations on this.

[0057] In the embodiments of the present application, descriptions such as "when...", "in the case of...", "if" and "if" all mean that the device will make corresponding processing under certain objective circumstances. It does not limit the time, nor does it require the device to have a judgment action when implementing it, nor does it mean that there are other limitations.

[0058] In the description of the embodiments of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the embodiments of the present application is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of the embodiments of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or its similar expression refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solution of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art will appreciate that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0059] It should be understood that the processor in the embodiments of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0060] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0061] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0062] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0063] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0064] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0065] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0066] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0067] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0068] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0069] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0070] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0071] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A multi-channel pressure transmitter, characterized in that: include: A transformer, a plurality of pressure acquisition modules, a plurality of safety monitoring computers and a pressure analysis computer; the plurality of pressure acquisition modules are all connected to the same pressure acquisition interface of the transformer, and the plurality of pressure acquisition modules are arranged in parallel; the pressure acquisition modules are connected to the safety monitoring computer, and the pressure acquisition modules correspond to the safety monitoring computers one by one; the plurality of safety monitoring computers are all connected to the pressure analysis computer.

2. The multi-channel pressure transmitter according to claim 1, characterized in that: The number of the pressure acquisition modules is three, and the number of the safety monitoring computers is three.

3. The multi-channel pressure transmitter according to claim 2, characterized in that: The multi-channel pressure transmitter is configured as: The three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: If the self-tests of the three safety monitoring computers are all normal, then the operation information of the corresponding pressure acquisition module is obtained from different safety monitoring computers for analysis: If the operation information of the three pressure acquisition modules is normal, the pressure data obtained by the three safety monitoring computers from the corresponding pressure acquisition modules are analyzed as follows: When the three collected pressure data are normal, the average is used as the pressure monitoring output; When the difference between one of the three collected pressure data and the other two pressure data exceeds the pressure comparison threshold, the average value of the other two pressure data is used as the pressure monitoring output; When the differences between the three collected pressure data exceed the pressure comparison threshold, a pressure monitoring fault signal is output.

4. The multi-channel pressure transmitter according to claim 2, characterized in that: The multi-channel pressure transmitter is configured as: The three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: If the self-tests of the three safety monitoring computers are all normal, then the operation information of the corresponding pressure acquisition module is obtained from different safety monitoring computers for analysis: If there is a fault in the operation information of the three pressure acquisition modules, the pressure data obtained by the other two safety monitoring computers from the corresponding pressure acquisition modules are analyzed as follows: When the two collected pressure data are normal, the average is used as the pressure monitoring output; When the difference between the two collected pressure data exceeds the pressure comparison threshold, a pressure monitoring fault signal is output.

5. The multi-channel pressure transmitter according to claim 2, characterized in that: The multi-channel pressure transmitter is configured as: The three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: If two of the three safety monitoring computers show normal self-test results, then different safety monitoring computers are obtained to analyze the operation information of the corresponding pressure acquisition modules: If the operation information of the two pressure acquisition modules is normal, the pressure data obtained by the two safety monitoring computers from the corresponding pressure acquisition modules are analyzed as follows: When the two collected pressure data are normal, the average is used as the pressure monitoring output; When the difference between the two collected pressure data exceeds the pressure comparison threshold, a pressure monitoring fault signal is output.

6. The multi-channel pressure transmitter according to claim 2, characterized in that: The multi-channel pressure transmitter is configured as: The three safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: If only one of the three safety monitoring computers shows a normal self-test or only one of the three pressure acquisition modules' operating information is normal, a pressure monitoring fault signal is output.

7. The multi-channel pressure transmitter according to claim 1, characterized in that: The number of the pressure acquisition modules is two, and the number of the safety monitoring computers is two.

8. The multi-channel pressure transmitter according to claim 7, characterized in that: The multi-channel pressure transmitter is configured as: The two safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: If the self-tests of the two safety monitoring computers are both normal, the operation information of the corresponding pressure acquisition module is obtained from different safety monitoring computers for analysis: If the operation information of the two pressure acquisition modules is normal, the pressure data obtained by the two safety monitoring computers from the corresponding pressure acquisition modules are analyzed as follows: When the two collected pressure data are normal, the average is used as the pressure monitoring output; When the difference between the two collected pressure data exceeds the pressure comparison threshold, a pressure monitoring fault signal is output.

9. The multi-channel pressure transmitter according to claim 7, characterized in that: The multi-channel pressure transmitter is configured as: The two safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: If the self-tests of the two safety monitoring computers are both normal, the operation information of the corresponding pressure acquisition module is obtained from different safety monitoring computers for analysis: If the operation information of the two pressure acquisition modules obtained shows that only one is normal, a pressure monitoring fault signal is output.

10. The multi-channel pressure transmitter according to claim 7, characterized in that: The multi-channel pressure transmitter is configured as: The two safety monitoring computers perform self-tests and provide self-test results to the pressure analysis computer: If only one of the two safety monitoring computers performs self-test normally, a pressure monitoring fault signal is output.

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