Programming type multi-output digital transmitter suitable for power plant

Abstract

The utility model discloses a programmable multi-output digital transmitter suitable for a power plant, which comprises a switching board card, a first board card and a second board card, the first board card and the second board card are connected with one side of the switching board card, and a power strip terminal and a filtering protection module for analog quantity output are integrated on the switching board card; a voltage and current conversion module and a power supply conversion module are integrated on the first board card; a sampling conversion module, a sampling measurement calculation module, an adjustment communication module, an analog quantity output module and a relay output module are integrated on the second board card, the analog quantity output module and the relay output module are mutually independent, the sampling conversion module outputs signals to the sampling measurement calculation module, and the sampling measurement calculation module outputs signals to the adjustment communication module. The operation module simultaneously outputs signals to the analog quantity output module and the relay output module. According to the utility model, the analog quantity output realizes the separate design of one path and the other three paths, and the single separated path can be configured with an isolator, so that the requirement of non-common ground is realized, and the mutual interference between systems is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of programmable multi-channel output digital transmitters suitable for power plants, in particular to a programmable multi-channel output digital transmitter suitable for power plants. Background Art

[0002] At present, a digital transmitter is a transmitter that digitizes analog signals and outputs them. It can realize functions such as signal acquisition, signal processing, digital signal conversion and communication transmission. The working principle of a digital transmitter is to digitize the analog signals collected by the sensor, process them through a microprocessor, and then output a standard digital signal. Digital transmitters have high measurement accuracy and stability and are widely used in industrial automation control systems. It can measure parameters such as pressure, temperature, flow, and liquid level, and convert these parameters into digital signal outputs for monitoring, control and processing. In industrial automation control systems, digital transmitters can measure and control various parameters such as pressure, temperature, flow, and liquid level, realize automatic control and real-time monitoring, and improve production efficiency and product quality. The programmable multi-channel output digital transmitter products used in domestic power plants have problems such as mutual interference between systems and a small number of output channels. Summary of the invention

[0003] In view of the above problems, the utility model proposes a programmable multi-channel output digital transmitter suitable for power plants, which solves the defects of existing programmable multi-channel output digital transmitter products such as mutual interference between systems and small number of output channels.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The utility model discloses a programmable multi-channel output digital transmitter suitable for power plants, including: a transfer board, a first board and a second board, the first board and the second board are connected to one side of the transfer board, the transfer board is integrated with a strip terminal and a filter protection module for analog output; the first board is integrated with a voltage and current conversion module and a power conversion module; the second board is integrated with a sampling conversion module, a sampling measurement calculation module, a calibration communication module and mutually independent analog output modules and relay output modules, the sampling conversion module outputs a signal to the sampling measurement calculation module, the sampling measurement calculation module outputs a signal to the calibration communication module, and the sampling measurement calculation module also outputs a signal to the analog output module and the relay output module. The utility model realizes a rich interface of analog output, relay output and electric energy output, the analog output realizes the separate design of 1 channel and the other three channels, and the single separated channel can be configured with an isolator to realize the requirement of not sharing the ground, effectively reducing the mutual interference between systems.

[0006] Optionally, the power strip terminal includes a voltage input terminal, a current input terminal and a power input terminal.

[0007] Optionally, the programmable multi-output digital transmitter suitable for a power plant also includes a shell, in which a first protective plate and a second protective plate are installed, the first board and the second board are arranged in parallel on the second protective plate, and the adapter board is installed on the first board and the second board arranged in parallel through an installation component.

[0008] Optionally, the mounting assembly includes a side mounting bar and a limiting member, the side mounting bar is provided with a plurality of first side holes, both sides of the first board and the second board are provided with end heads inserted into the first side holes, the side mounting bar located outside the first side hole is provided with a downwardly recessed recess for placing an adapter board, and the adapter board is provided with a second mounting groove that is compatible with the limiting member.

[0009] Optionally, a plurality of strip holes are provided on both sides of the first protective plate, and a mounting frame matching the strip holes is provided on the side of the adapter card close to the first protective plate, and a through cavity is provided in the middle of the mounting frame, and the cavity is used to load the plug strip terminals. The utility model adopts a tray transfer method internally in structure to reduce the number of jumper connections, and also realizes a one-time connection and plug-in method for external connection lines to reduce the cumbersome steps of screwing each time the line is changed.

[0010] Optionally, a first mounting hole is provided on the side wall of the shell, a second mounting hole matching the first mounting hole is provided on the side wall of the first protective plate, and first fastening nails are installed in the first mounting hole and the second mounting hole.

[0011] Optionally, a third mounting hole is provided on the top of the first protective plate, a fourth mounting hole is provided on the recessed platform and is arranged opposite to the third mounting hole, the mounting frame is provided with a fifth mounting hole which is compatible with both the third mounting hole and the fourth mounting hole, and second fastening nails are provided in the third mounting hole, the fourth mounting hole and the fifth mounting hole.

[0012] Optionally, a fastening column is installed on the adapter board, and a limiting hole adapted to the fastening column is installed on the first protective plate.

[0013] Optionally, a sixth mounting hole is provided in the middle of the side mounting strip, a seventh mounting hole matching the sixth mounting hole is provided on the top of the first protective plate, and third fastening nails are provided in the sixth mounting hole and the seventh mounting hole.

[0014] Optionally, an L-shaped block is further provided on the outer side of the first protective plate, and an eighth mounting hole matching the sixth mounting hole and the seventh mounting hole is provided on the L-shaped block, and the third fastening nail passes through the sixth mounting hole, the seventh mounting hole and the eighth mounting hole in sequence.

[0015] Optionally, the side mounting bars are a pair, and the concave platforms of the pair of side mounting bars are arranged facing each other.

[0016] Optionally, the utility model adopts localization in the measurement and calculation chip (CKS32F407GT6), high-precision sampling chip (CL1606) and high-precision resolution frequency programmable logic chip (AG576SL100). Considering the national energy security and function upgrade, it is necessary to localize the corresponding transmitter products and upgrade the performance to replace the existing products to solve the current problems and provide a solution for a good transition in the future. Beneficial Effects

[0017] 1. The utility model realizes 4-way output and can configure multiple power parameters. It also separates the entire circuit from the main measurement chip to the analog data to the external output, which can effectively avoid possible interference between each other or interference between different systems.

[0018] 2. The mechanical structure of the utility model has also been modified to reduce the trouble of repeated wiring. The above measures reduce the workload and ensure the reliable operation of the power system.

[0019] 3. The measurement and calculation chip (CKS32F407GT6), high-precision sampling chip (CL1606) and high-precision resolution frequency programmable logic chip (AG576SL100) of the main functions of this utility model are domestically made. The output can be equipped with a 16-bit high-precision synchronous sampling digital-to-analog conversion chip (CL4460), which improves the accuracy level in sampling testing and the accuracy level in output.

[0020] 4. The programmable multi-channel output digital transmitter of the utility model adopts the domestic high-performance chip design for the first time to respond to the national requirements on the localization of energy security.

[0021] 5. The utility model realizes the requirements of adopting the high-precision design of the main domestically produced chips, the requirements of enriching the output interface, the requirements of separating the analog quantity and the ground design, and the design of structural optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a programmable multi-channel output digital transmitter suitable for power plants according to Embodiment 1 of the utility model;

[0023] Figure 2 It is a flow chart of a programmable multi-channel output digital transmitter suitable for power plants according to Embodiment 1 of the utility model;

[0024] Figure 3It is an exploded view of a programmable multi-channel output digital transmitter suitable for power plants according to Embodiment 1 of the utility model.

[0025] Figure 4 It is a top view of a programmable multi-channel output digital transmitter suitable for power plants according to Embodiment 1 of the utility model.

[0026] The reference numerals in the figures are:

[0027] 1. Adapter board, 2. First board, 3. Second board, 4. Socket terminal, 5. Shell, 6. First protective plate, 7. Second protective plate, 8. Side mounting strip, 9. Limiting piece, 10. First side hole, 11. Terminal, 12. Recess, 13. Second mounting groove, 14. Second fastening nail, 15. Mounting frame, 16. Cavity, 17. First mounting hole, 18. Second mounting hole, 19. First fastening nail, 20. Third mounting hole, 21. Fourth mounting hole, 22. Fifth mounting hole, 23. Fastening column, 24. Sixth mounting hole, 25. Seventh mounting hole, 26. Third fastening nail, 27. L-shaped block, 28. Eighth mounting hole, 29. Strip hole. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the specific implementation of the present utility model in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

[0029] In the description of the present utility model, unless otherwise specified, "multiple" means two or more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Example 1

[0031] The technical solution adopted by the utility model is as follows:

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model discloses a programmable multi-channel output digital transmitter suitable for power plants, including: a programmable multi-channel output digital transmitter suitable for power plants, including: an adapter board 1, a first board 2 and a second board 3, the first board and the second board are connected to one side of the adapter board, the adapter board is integrated with a socket terminal 4 and a filtering protection module for analog output; the first board is integrated with a voltage and current conversion module and a power conversion module; the second board is integrated with a sampling conversion module, a sampling measurement and calculation module, a calibration communication module and mutually independent analog output modules and relay output modules, the sampling conversion module outputs a signal to the sampling measurement and calculation module, the sampling measurement and calculation module outputs a signal to the calibration communication module, and the sampling measurement and calculation module also outputs a signal to the analog output module and the relay output module at the same time.

[0033] The socket terminal comprises a voltage input terminal, a current input terminal and a power input terminal.

[0034] The programmable multi-channel output digital transmitter suitable for power plants also includes a shell 5, in which a first protective plate 6 and a second protective plate 7 are installed. The first board and the second board are arranged in parallel on the second protective plate, and the adapter board is installed on the first board and the second board arranged in parallel through an installation component.

[0035] The mounting assembly includes a side mounting bar 8 and a stopper 9, wherein the side mounting bar is provided with a plurality of first side holes 10, and both sides of the first board and the second board are provided with terminals 11 inserted into the first side holes, and the side mounting bar located outside the first side hole is provided with a concave platform 12 formed by a downward depression for placing the adapter board, and the adapter board is provided with a second mounting groove 13 adapted to the stopper. The stopper is provided with convex columns at both ends, and the first board and the second board are provided with round holes adapted to the convex columns.

[0036] A plurality of strip holes 29 are provided on both sides of the first protective plate. A mounting frame 15 matching the strip holes is provided on the side of the adapter card close to the first protective plate. A through cavity 16 is provided in the middle of the mounting frame for receiving the strip terminals.

[0037] A first mounting hole 17 is provided on the side wall of the housing, a second mounting hole 18 matching the first mounting hole is provided on the side wall of the first protective plate, and first fastening nails 19 are installed in the first mounting hole and the second mounting hole.

[0038] A third mounting hole 20 is provided on the top of the first protective plate, a fourth mounting hole 21 is provided on the recessed platform and is arranged opposite to the third mounting hole, a fifth mounting hole 22 is provided on the mounting frame and is compatible with both the third mounting hole and the fourth mounting hole, and a second fastening nail 14 is provided in the third mounting hole, the fourth mounting hole and the fifth mounting hole.

[0039] The adapter board is provided with a fastening column 23, and the first protective plate is provided with a limiting hole matched with the fastening column. A sixth mounting hole 24 is provided in the middle of the side mounting strip, and a seventh mounting hole 25 matched with the sixth mounting hole is provided on the top of the first protective plate, and a third fastening nail 26 is provided in the sixth mounting hole and the seventh mounting hole.

[0040] An L-shaped block 27 is also provided on the outer side of the first protective plate. An eighth mounting hole 28 matching the sixth mounting hole and the seventh mounting hole is provided on the L-shaped block. The third fastening nail passes through the sixth mounting hole, the seventh mounting hole and the eighth mounting hole in sequence.

[0041] The measurement and calculation chip (CKS32F407GT6), high-precision sampling chip (CL1606) and high-precision resolution frequency programmable logic chip (AG576SL100) are domestically made. The output can be equipped with a 16-bit high-precision synchronous sampling digital-to-analog conversion chip (CL4460), which improves the accuracy level in sampling test and output. It also realizes 4-way output and can configure multiple power parameters. It also separates one analog quantity from the other 3 channels from the main measurement chip to the analog quantity data to the external output. The entire line can effectively avoid possible interference between each other or interference between different systems. The mechanical structure of the machine has also been changed to reduce the trouble of repeated wiring. The above measures reduce the workload and ensure the reliable operation of the power system.

[0042] There are 4 analog output regroup boards in total, each of which is mainly composed of 16-bit high-precision synchronous sampling digital-to-analog conversion chips and computing elements. These two types of regroup boards are installed on the second board through connectors, and other sampling conversion / calibration communication / power output / relay output / isolator are all welded on the board.

[0043] The voltage / current AC input signal is connected to the first board through the adapter board. It is converted into a small amplitude signal through a mutual inductor and then sent to the second board. The board is filtered and amplitude adjusted through the sampling conversion circuit and then sent to the 16-bit high-precision synchronous sampling chip. The sampling chip converts the obtained analog signal into a digital signal and sends it to the 32-bit microcontroller chip. After manually written programs and communication adjustment, it generates accurate analog values, power values, and DO value signals, which are then sent to the user's system through various analog output circuits, power output, and relay output circuits through the adapter board.

[0044] When this embodiment is implemented, the voltage / current AC input signal is connected to the signal input / power supply board through the adapter board. It is converted into a small amplitude signal through a mutual inductor and then sent to the sampling and processing board. The board is filtered and the amplitude is adjusted through the sampling conversion circuit and then sent to the 16-bit high-precision synchronous sampling chip. The sampling chip converts the obtained analog signal into a digital signal and sends it to the 32-bit microcontroller chip. After the manually written program and communication adjustment, the accurate analog value, power value, and DO value signal are generated and then sent to the user's system through various analog output circuits, power output, and relay output circuits through the adapter board. The first protective plate and the housing are fastened together by the first fastening nail. The first protective plate, the side mounting bar, and the mounting frame are fastened together by the second fastening nail. The adapter board, the side mounting bar, and the L-shaped block are fastened together by the third fastening nail. The first board and the second board are fixed on the convex column of the limiter using a round hole.

[0045] The above description is only a preferred embodiment of the utility model, and does not limit the patent protection scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the utility model.

Claims

1. A programmable multi-channel output digital transmitter suitable for power plants, characterized in that: include: A transfer board, a first board, and a second board, wherein the first board and the second board are connected to one side of the transfer board, and the transfer board is integrated with a socket terminal and a filter protection module for analog output; The first board is integrated with a voltage-current conversion module and a power conversion module; the second board is integrated with a sampling conversion module, a sampling measurement and calculation module, a calibration communication module and mutually independent analog output modules and relay output modules. The sampling conversion module outputs signals to the sampling measurement and calculation module, the sampling measurement and calculation module outputs signals to the calibration communication module, and the sampling measurement and calculation module also outputs signals to the analog output module and the relay output module.

2. A programmable multi-channel output digital transmitter suitable for a power plant as claimed in claim 1, characterized in that: The socket terminals include a voltage input terminal, a current input terminal and a power input terminal.

3. A programmable multi-channel output digital transmitter suitable for a power plant as claimed in claim 1 or 2, characterized in that: It also includes a shell, in which a first protective plate and a second protective plate are installed. The first board and the second board are arranged side by side on the second protective plate, and the adapter board is installed on the first board and the second board arranged side by side through an installation component.

4. A programmable multi-channel output digital transmitter suitable for power plants as claimed in claim 3, characterized in that: The mounting assembly includes a side mounting bar and a limiting piece. The side mounting bar is provided with a plurality of first side holes. Both sides of the first and second boards are equipped with ends inserted into the first side holes. The side mounting bar located outside the first side hole is provided with a downwardly concave platform for placing the adapter board. The adapter board is equipped with a second mounting groove adapted to the limiting piece.

5. A programmable multi-channel output digital transmitter suitable for power plants as claimed in claim 4, characterized in that: A plurality of strip holes are provided on both sides of the first protective plate. A mounting frame adapted to the strip holes is provided on the side of the adapter card close to the first protective plate. A through cavity is provided in the middle of the mounting frame for receiving the strip terminals.

6. A programmable multi-channel output digital transmitter suitable for power plants as claimed in claim 5, characterized in that: A first mounting hole is provided on the side wall of the shell, a second mounting hole adapted to the first mounting hole is provided on the side wall of the first protective plate, and first fastening nails are installed in the first mounting hole and the second mounting hole.

7. A programmable multi-channel output digital transmitter suitable for power plants as claimed in claim 6, characterized in that: A third mounting hole is provided on the top of the first protective plate, and a fourth mounting hole is provided on the recessed platform which is arranged opposite to the third mounting hole. The mounting frame is provided with a fifth mounting hole which is compatible with both the third mounting hole and the fourth mounting hole. Second fastening nails are provided in the third mounting hole, the fourth mounting hole and the fifth mounting hole.

8. The programmable multi-channel output digital transmitter suitable for power plants as claimed in claim 3, characterized in that: The adapter board is provided with a fastening column, and the first protective plate is provided with a limiting hole adapted to the fastening column.

9. A programmable multi-channel output digital transmitter suitable for a power plant as claimed in claim 4, characterized in that: A sixth mounting hole is provided in the middle of the side mounting strip, a seventh mounting hole matching the sixth mounting hole is provided on the top of the first protective plate, and third fastening nails are provided in the sixth mounting hole and the seventh mounting hole.

10. A programmable multi-channel output digital transmitter suitable for a power plant as claimed in claim 9, characterized in that: An L-shaped block is also provided on the outer side of the first protective plate, and an eighth mounting hole is provided on the L-shaped block that is compatible with the sixth mounting hole and the seventh mounting hole. The third fastening nail passes through the sixth mounting hole, the seventh mounting hole and the eighth mounting hole in sequence.

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