Single-measuring-point pressure gauge redundancy measurement value transmitting device

Abstract

The utility model provides a single-measuring-point pressure gauge redundancy measurement value transmitting device, and relates to the technical field of industrial instrument automation. The system comprises a mainboard module which is electrically connected with a multi-sensor module, the multi-sensor module comprises a plurality of pressure sensors arranged in a water level gauge well of a lock chamber, the multi-sensor module is connected with a water level gauge well module and used for collecting water level information of the lock chamber in real time, and the other end of the mainboard module is connected with a data processing module and a display module. The data processing module carries out data processing and conversion on the acquired information of the sensor, and transmits the processed data to the control terminal module for connection, so that the computing power load of the ship lock industrial control system is reduced, and the stability and reliability of the ship lock industrial control system and ship lock water level data detection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial instrument automation, in particular to a redundant measurement value transmitting device for a single-measurement-point pressure gauge. Background Art

[0002] Large ship locks generally have the characteristics of high working water head, fast filling and discharging speed, and large inertia of working gate valves. In order to cope with the risks of ship lock operation brought about by large-scale ships, it is necessary to dynamically perceive and intervene in the risk sources that endanger the safety of ship lock operation during the ship lock operation control process. Therefore, the types and numbers of deployed lock equipment detection sensors are increasing, and the centralized processing of multi-channel sensor signals has an increasingly greater impact on the stability and reliability of large ship lock industrial control systems.

[0003] Most of the key sensors for ship lock operation are pressure sensors, such as hydraulic system oil pressure detection sensors, lock chamber water level gauges, etc. The oil pressure detection sensor feeds back the hydraulic system pressure value to the local control substation to control the operation of the entire hydraulic system. The lock chamber water level gauge is a key sensor for the normal operation of the ship lock operation process. The key nodes of the gate valve opening and closing operation control all rely on accurate and reliable water level signals. Therefore, the stability and reliability of this type of sensor directly affects the normal operation of the ship lock.

[0004] Based on the actual operation scenario of the ship lock, the lock hydraulic equipment and the lock chamber water level gauge need to be redundantly arranged with sensors to deal with problems such as unstable, jumping, and inaccurate sensor signals. At present, the hydraulic systems of most ship locks use a single or multi-point arrangement, which cannot meet the needs of on-site use. Moreover, due to the wide variety of on-site deployment points of water level gauges, it was found in actual use that this method occupied a large amount of PLC-CPU computing resources of the industrial control system, reducing the overall performance of the industrial control system. At the same time, the existing multiple water level gauge data judgment and voting programs cannot predict the health status of the water level gauge, and when the performance of multiple water level gauges decreases at the same time, the corresponding performance and faults cannot be judged. The existing technology does not improve the stability and reliability of water level data. Utility Model Content

[0005] The main purpose of the utility model is to provide a redundant measurement value transmitting device for a single-measurement-point pressure gauge, so as to solve the current problem of how to reduce the computing power load of the ship lock industrial control system and improve the stability and reliability of the ship lock industrial control system and the ship lock water level data detection.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a single-measuring-point pressure gauge redundant measurement value transmitting device, including a mainboard module, the mainboard module is electrically connected to a multi-sensor module, the multi-sensor module includes multiple pressure sensors arranged in a water level gauge well in a lock chamber, the multi-sensor module is connected to the water level gauge well module, and is used to collect lock chamber water level information in real time, the other end of the mainboard module is respectively connected to a data processing module and a display module, and the other end of the data processing module is connected to a control terminal module.

[0007] In a preferred solution, a plurality of expansion slots are provided in the installation chassis, and the mainboard module and the slots are connected via an internal high-speed bus.

[0008] The preferred solution also includes an installation chassis, the front panel of which is installed with a display module and a status indicator module, and the status indicator module is connected to the control terminal module;

[0009] The back panel of the chassis is installed with an IO interface module and a power switch, and the interface signal line or the power line is connected through the corresponding wire trough and terminal.

[0010] In the preferred embodiment, the data processing module also includes multiple AI+AO modules and multiple DO modules connected to the main board module. Each AI+AO module and DO module exchanges data with the main board module using the ModbusRtu communication protocol to realize the collection and output of water level data.

[0011] In the preferred embodiment, a serial communication module, a network switching module or a Lora / ZigBee / HPLC module is also included.

[0012] In the preferred embodiment, it also includes an alarm module connected to the control terminal module, which is used to receive control instructions sent by the control terminal module according to the health status data of the current water level meter, and the alarm module issues a corresponding alarm.

[0013] The utility model provides a single-measurement-point pressure gauge redundant measurement value transmitting device, comprising a mainboard module electrically connected to a multi-sensor module, the multi-sensor module comprising a plurality of pressure sensors arranged in a water level gauge well in a lock chamber, the multi-sensor module being connected to the water level gauge well module for real-time acquisition of lock chamber water level information, the other end of the mainboard module being respectively connected to a data processing module and a display module, the data processing module performing data processing and conversion on the acquired sensor information, and transmitting the processed data to a control terminal module for connection, thereby reducing the computing power load of a ship lock industrial control system, and improving the stability and reliability of the ship lock industrial control system and ship lock water level data detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is the hardware platform structure diagram of the utility model;

[0016] Figure 2 It is the internal logical structure diagram of the mainboard of the transmitter;

[0017] Figure 3 It is the structure diagram of the utility model device;

[0018] Figure 4 It is a structural diagram of the data processing module of the utility model;

[0019] Figure 5 This is a structural diagram of the front panel of the installation chassis of the utility model;

[0020] Figure 6 This is a structural diagram of the back panel of the chassis of the utility model;

[0021] Figure 7 This is the internal structure diagram of the installation case of the utility model;

[0022] Figure 8 This is the design block diagram of the AI ​​expansion board of the utility model circuit board;

[0023] Figure 9 This is the design block diagram of the AO expansion board of the utility model circuit board;

[0024] Figure 10 It is a design block diagram of a DO expansion board of the utility model circuit board.

[0025] In the figure: main board module 1; multi-sensor module 2; data processing module 3; AI+AO module 301; DO module 302; display module 4; control terminal module 5; water level gauge well module 6; installation chassis 7; status indicator module 8; IO interface module 9; power switch 10; alarm module 11. DETAILED DESCRIPTION

[0026] Example 1

[0027] The utility model is suitable for large ship locks. The main role of the transmitter is the embedded industrial computer. Considering the special needs of different industry sites, the integrated design of the expansion board can often simplify the difficulty of system integration, save debugging time, improve system reliability, reduce costs, and improve economy. On the one hand, to ensure the greatest degree of convenience, so that third parties can develop corresponding expansion boards; on the other hand, in most application scenarios, no high-speed bus is required. Therefore, the main board of the transmitter and the expansion board adopt a bus communication method with a flat cable jumper, instead of a more expensive backplane bus method. The communication method between the expansion board and the main board can adopt Modbus or other customized efficient communication protocols.

[0028] likeFigure 1-10 As shown, a single-measurement-point pressure gauge redundant measurement value transmitting device includes a mainboard module 1, which is electrically connected to a multi-sensor module 2. The multi-sensor module 2 includes a plurality of pressure sensors redundantly arranged in a water level gauge well in a lock chamber. The multi-sensor module 2 is connected to a water level gauge well module 6 for real-time acquisition of lock chamber water level information. The other end of the mainboard module 1 is respectively connected to a data processing module 3 and a display module 4, and the other end of the data processing module 3 is connected to a control terminal module 5.

[0029] like Figure 3 As shown, the mainboard module 1 obtains the data signal collected by the multi-sensor module 2 and transmits it to the data processing module 3 for corresponding data processing. The data processing module 3 transmits the processed data to the control terminal module 5. The control terminal module 5 transmits the result to the display module 4 and performs corresponding control operations. In view of the defect that the current hydraulic system uses a single measuring point or a multi-measuring point arrangement, based on the on-site use requirements, the accurate measurement of real-time water level data is achieved, a large amount of industrial control system PLC-CPU computing resources is saved, and the overall performance of the industrial control system is reduced. At the same time, the health status of the water level meter is predicted, and the stability and reliability of the water level data are improved.

[0030] like Figure 1 As shown, the mainboard module 1 of the utility model selects the Loongson 2K1000 processor architecture as the hardware platform of the transmitter. On the premise of ensuring that the algorithm can run smoothly, it fully utilizes the advantages of the Loongson architecture with complete independent intellectual property rights to build a reliable, stable, and long-life industrial-grade field control product. The overall architecture design of the hardware platform is as follows Figure 1 As shown, it includes a main board centered on the Loongson 2K1000 core board, two 4AI+4AO expansion boards, one 8DO expansion board and one LED status indicator board.

[0031] The transmitter currently uses a "core board + base board" approach to form a motherboard system. The standard 2K1000 core board is welded to a specially designed base board with various extended IO function interfaces through a stamp port interface to form a complete system.

[0032] In order to further improve the reliability of the system (one-time board manufacturing and welding), the CPU + baseboard integrated design can be adopted. The main functions of the motherboard are shown in Table 1 below.

[0033] Table 1 Main functions of the 2K1000 core board

[0034] Item Description Processor and OS Loongson 2K1000 Dual-core 1.0GHz, Loongnix Memory 4GB DDR3 Storage SATA2.0, 512G Network Interface Dual-port, 100M / 1000M Adaptive, Independent MAC USB Interface Dual-port, with Isolation HDMI Interface Single-port 485 Interface Dual-port, with Isolation PCIe Interface 4 Groups + 2 Expansion Slots Expansion Slot Quad-port

[0035] Each function of the utility model is realized by the internal logic of the mainboard. The specific internal logic structure of the mainboard is as follows: Figure 2 shown.

[0036] In the preferred embodiment, it also includes an installation chassis 7, the front panel of the installation chassis 7 is installed with a display module 4 and a status indicator module 8, and the status indicator module 8 is connected to the control terminal module 5;

[0037] The back panel of the mounting chassis 7 is mounted with an IO interface module 9 and a power switch 10, and the interface signal lines or power lines are connected through corresponding wire slots and terminals.

[0038] In order to meet the application needs of most industrial control application scenarios, the transmitter device of this embodiment is designed as a 2U standard chassis structure to ensure that it can be inserted into a standard cabinet.

[0039] like Figure 5 As shown, the front panel of the installation chassis 7 is equipped with various operating status indicator lights; all indicator lights can be programmed, dynamically configured, and dynamically displayed through GPIO by the control program according to the actual status and data of the system operation.

[0040] like Figure 6 As shown, the back of the chassis 7 is equipped with various IO interfaces and a power switch. Various signal lines and power lines are connected through wire troughs and terminals.

[0041] In a preferred embodiment, a plurality of expansion slots are provided in the mounting chassis 7, and the mainboard module 1 is connected to the slots via an internal high-speed bus.

[0042] like Figure 6 As shown, there are 4 expansion slots, and the mainboard and the slots are connected through an internal high-speed bus.

[0043] In the preferred embodiment, Figure 4 As shown, the data processing module 3 also includes multiple AI+AO modules 301 and multiple DO modules 302 connected to the main board module 1. Each AI+AO module 301 and DO module 302 exchanges data with the main board module 1 using the ModbusRtu communication protocol to realize the collection and output of water level data.

[0044] like Figure 6 As shown, the extended IO function board can include various AI / AO / DO modules, serial communication modules, network switching modules, Lora / ZigBee / HPLC, etc., and can be continuously expanded according to the actual needs of the industry site.

[0045] The installation position of each module can be determined according to different requirements, such as Figure 7 As shown, the internal structure of an installation chassis used in this embodiment is shown.

[0046] In this embodiment, the expansion board design is divided into the AI+AO expansion board design and the DO expansion board design. In this embodiment, the AI+AO module 301 is the AI+AO expansion board. The DO module 302 can be the DO expansion board. The expansion board and the main board exchange data using the ModbusRtu communication protocol.

[0047] 1) AI+AO expansion board

[0048] AI is analog input, used to receive the analog signals from external devices, that is, the 4-20mA analog current value returned by the water level sensor. The current signal is converted into the actual water level height through analog-to-digital conversion for subsequent display and analysis.

[0049] AO is analog output, used to convert the output water level height into a 4-20mA standard signal for output, facilitating the upper control system to read. In this embodiment, the expansion board provides four channels of AI + four channels of AO. The circuit board AI and AO design block diagrams are respectively as Figure 8 and Figure 9 shown.

[0050] 2) DO expansion board

[0051] DO is digital output, used to output alarm signals, including status signals such as fault, low risk, high risk, offline, normal, etc. The design block diagram of the DO circuit board is as Figure 10 shown.

[0052] In the preferred solution, it also includes a serial communication module, a network switching module or a Lora / ZigBee / HPLC module.

[0053] This utility model supports diverse communication interfaces and widely supported communication protocols, and supports seamless docking with various devices and systems. For example, the serial communication interface can read and write files on a device inserted with a USB interface.

[0054] In the preferred solution, it also includes an alarm module 11 connected to the control terminal module 5, used to receive the control instructions sent by the control terminal module 5 according to the health status data of the current water level gauge, and the alarm module 11 performs corresponding alarms.

[0055] In this embodiment, the control terminal module 5 will, according to the non-healthy state of the water level gauge, uniformly store the status of each water level gauge. If it is found that the data is abnormal, the alarm module 11 will issue corresponding alarms. Relevant personnel can set the alarm classification situation, and according to different alarm data, manually judge the reason for the abnormality of the water level gauge and perform corresponding operations. For example: manually set the deviation value of the water level gauge to make the data returned by the water level gauge consistent with the true value.

[0056] The sensor of this embodiment adopts a pressure sensor, and other types of sensors such as temperature sensors can be adopted according to actual needs. The water level information collected by the pressure sensor is transmitted to the data processing module 3, compared and analyzed by the algorithm, and stored for subsequent use.

[0057] The display module 4 can be connected to an external display and present the results on the display screen through the HDMI interface. The content on the display screen may include multiple sensor information, various parameter setting information and operation logs.

[0058] The control terminal module 5 in this embodiment may adopt a local substation PLC control system.

[0059] This embodiment collects and processes water level information, and transmits the processing results to the local substation PLC control system through analog and digital signals, specifically including the following steps:

[0060] Step 1: Deploy multiple pressure sensors in a water level gauge well of a large ship lock.

[0061] Step 2: Install the electric control cabinet on the side wall of the water level gauge well, using the bottom wiring method to facilitate the connection of the water level gauge signal line to the transmitter.

[0062] Step 3: Install the transmitter in the electric control cabinet and connect it directly to the water level meter signal line. This avoids the attenuation and interference of the water level sensor signal. The transmitter reads the real signal detected by the water level meter.

[0063] Step 4: Lay the power supply cable from the upper power supply cabinet to the electric control cabinet at the water level meter well to provide AC220V power supply for the transmitter.

[0064] Step 5: Connect the transmitter to the external display.

[0065] Step 6: Lay out the output signal cable and connect the output signal of the transmitter to the AI ​​and DI module ports of the local PLC system.

[0066] Step 7: Pressure sensor parameter setting.

[0067] Before data collection, the pressure sensor data is calibrated through an external display screen, including the range, change threshold, deviation threshold, high-risk fault threshold, real-time data collection cycle, etc.

[0068] Step 8: The measuring device is running. The measuring device is started on the external display screen. The data acquisition and processing software module begins to collect information from multiple pressure sensors according to the set data acquisition cycle. The ADC value is converted into a water level value through a software algorithm. The data processing module converts it into an electrical signal recognizable by a computer and recorded in a memory. Through the data processing software, it is converted into a graphic form and a traceable curve graph form.

[0069] Step 9: Output data. The output signal of the transmitter is connected to the data communication interface of the original control system PLC device. The processed water level data is output to the PLC of the control system to participate in the operation of the ship lock.

[0070] The utility model collects, analyzes, and processes data from multiple pressure sensors and generates corresponding alarm information, thereby performing manual water level gauge calibration and realizing sensor health status monitoring and identification. It can connect to various types of sensors, has diverse communication interfaces and widely supported communication protocols, and supports seamless connection with various devices and systems, thereby effectively reducing the frequency of water level gauge maintenance and repair caused by abnormal water level data and improving the stability and reliability of lock operation.

[0071] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A redundant measurement value transmitter for a single-measurement-point pressure gauge, characterized in that: The invention comprises a mainboard module (1), the mainboard module (1) being electrically connected to a multi-sensor module (2), the multi-sensor module (2) comprising a plurality of pressure sensors arranged in a water level gauge well of a lock chamber, the multi-sensor module (2) being connected to a water level gauge well module (6) for real-time acquisition of lock chamber water level information, the other end of the mainboard module (1) being respectively connected to a data processing module (3) and a display module (4), and the other end of the data processing module (3) being connected to a control terminal module (5).

2. The redundant measurement value transmitting device for a single-measurement-point pressure gauge according to claim 1, characterized in that: It also includes an installation chassis (7), the front panel of the installation chassis (7) is installed with a display module (4) and a status indicator light module (8), and the status indicator light module (8) is connected to the control terminal module (5); An IO interface module (9) and a power switch (10) are installed on the back panel of the installation chassis (7), and the interface signal line or the power line is connected through the corresponding wire groove and terminal.

3. The redundant measurement value transmitting device for a single-measurement-point pressure gauge according to claim 2 is characterized in that: A plurality of expansion slots are arranged in the installation chassis (7), and the mainboard module (1) is connected to the slots via an internal high-speed bus.

4. The redundant measurement value transmitting device of a single-measurement-point pressure gauge according to claim 1, characterized in that: The data processing module (3) further comprises a plurality of AI+AO modules (301) and a plurality of DO modules (302) connected to the main board module (1); each of the AI+AO modules (301) and the DO module (302) exchanges data with the main board module (1) using the ModbusRtu communication protocol, thereby realizing the collection and output of water level data.

5. The redundant measurement value transmitting device of a single-measurement-point pressure gauge according to claim 4 is characterized in that: It also includes a serial communication module, a network switching module or a Lora / ZigBee / HPLC module.

6. The redundant measurement value transmitting device of a single-measurement-point pressure gauge according to claim 1, characterized in that: It also includes an alarm module (11) connected to the control terminal module (5) and used for receiving a control instruction sent by the control terminal module (5) according to the health status data of the current water level meter, and the alarm module (11) issues a corresponding alarm.

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