CN216351937U - 16-channel switching value input device of DCS (distributed control system) - Google Patents
16-channel switching value input device of DCS (distributed control system) Download PDFInfo
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- CN216351937U CN216351937U CN202122507067.2U CN202122507067U CN216351937U CN 216351937 U CN216351937 U CN 216351937U CN 202122507067 U CN202122507067 U CN 202122507067U CN 216351937 U CN216351937 U CN 216351937U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses a 16-channel switching value input device of a DCS, comprising: the power supply module is used for supplying power to the switching value input device; 16 input channels for inputting switching value signals; a digital isolation module connected to the 16 input channels; the FPGA is connected to the digital isolation module to acquire the switching value signal; the ARM is connected to the FPGA to filter the switching value signal; the communication data bus is connected to the FPGA so as to transmit the switching value signal processed by the ARM to an upper computer through the FPGA; the power supply module comprises a first power supply module and a second power supply module, and the first power supply module is connected to the FPGA and the ARM to supply power to the FPGA and the ARM; the second power supply module supplies power to an external circuit. The utility model greatly improves the use efficiency and the anti-interference performance of the whole device.
Description
Technical Field
The utility model relates to the technical field of automatic control, in particular to a 16-channel switching value input device of a DCS (distributed control system).
Background
At present, a Distributed Control System (DCS) has been widely used in the field of automation Control of power, petroleum, chemical industry, steel, paper making, cement, desulfurization, dust removal, water treatment, etc., and is a multi-level Computer system composed of a process Control level and a process monitoring level and using a Communication network as a link, and integrates 4C technologies such as a Computer (Computer), Communication (Communication), display (CRT), Control (Control), etc., and the basic idea is to perform decentralized Control, centralized operation, hierarchical management, flexible configuration, and convenient configuration.
In the prior art, a switching value input module in a DCS system is only responsible for inputting 8 switching value signals, and generally, a 24V query voltage is adopted, so that the query voltage is greatly reduced due to the requirements of a query circuit and long-distance transmission of switching value data, and the interference rejection of the whole switching value input module is greatly influenced.
Therefore, those skilled in the art have devoted themselves to develop a 16-channel switching value input device, which greatly improves the utilization efficiency and the interference resistance of the whole device.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the present invention provides a 16-channel switching value input device of a DCS system, comprising:
the power supply module is used for supplying power to the switching value input device;
16 input channels for inputting switching value signals;
a digital isolation module connected to the 16 input channels;
the FPGA is connected to the digital isolation module to acquire the switching value signal;
the ARM is connected to the FPGA to filter the switching value signal;
the communication data bus is connected to the FPGA so as to transmit the switching value signal processed by the ARM to an upper computer through the FPGA;
the power supply module comprises a first power supply module and a second power supply module, and the first power supply module is connected to the FPGA and the ARM to supply power to the FPGA and the ARM; the second power supply module supplies power to an external circuit.
Further, the input of the first power supply module is two paths of 24V direct-current voltage, and the output is 5V direct-current voltage.
Further, the input of the second power supply module is two paths of 24V direct current voltages, and the output is 48V direct current voltage and 12V direct current voltage.
Further, the direct current voltage conversion chip of the first power supply module is an SGM6232YPS8G chip.
Further, the digital isolation module comprises an optical coupling array and a digital isolation chip.
Further, the digital isolation chip is an ISO1200 series isolation chip.
Further, the FPGA comprises a GW1N-LV4LQ100C6I5 chip.
Further, the ARM comprises an ARM M23 chip.
Further, the communication data bus comprises a SIT3088EESA 485 chip.
Further, the LED display device also comprises an LED indicator light which is connected to the FPGA.
The utility model can realize the interference-free detection of the on-site switching value input signal and improve the use efficiency of the switching value input. In addition, the utility model uses the autonomous domestic chip, improves the efficiency of product production, reduces the production cost and optimizes the production flow.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the utility model is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
As shown in FIG. 1, the utility model provides a 16-channel switching value input device of DCS system, which is used for inputting switching value, and 16 switching value input signals can be simultaneously connected to the device for switching value detection. The 16-channel switching value input device provided by the utility model is formed by building a circuit, and all chips are domestic chips, so that the switching value input signal on the site can be detected without interference, and the requirement of an industrial site is met.
The switching value input device provided by the utility model comprises a power supply module, a digital isolation module, an FPGA30, an ARM20, a communication data bus 50 and an input channel 60, wherein the power supply module is used for supplying power to the whole device, the input of the power supply module is direct-current voltage, and the output of the power supply module is direct-current voltage. The input channel 60 is connected to a digital isolation module, which is connected to the FPGA30, and the FPGA30 is connected to the communication data bus 50 and the ARM20, respectively.
The input channels 60 include 16 channels Chn0-Chn15, which are external input signals, and standard signals of the input channels are switching value signals, and the switching value signals enter the FPGA30 after passing through the multi-path optocoupler array 40.
The FPGA30 transmits the input switching value signal to the ARM20, the ARM20 filters the input switching value signal and transmits the processed signal back to the FPGA30, and the FPGA30 communicates the processed data with the controller through the communication data bus 50.
In the utility model, the ARM20 is mainly responsible for processing the switching value data sampled by the FPGA30, and can adopt a 32-bit ARM M23 chip, specifically adopt a GD32E230C8T6 singlechip of a company of million easy innovation, and can adopt C language programming. ARM20 may exchange data with FPGA30 via an external bus.
The FPGA30 is responsible for collecting switching value data, communicating with an upper controller and interacting data with the ARM 20. In the utility model, a GW1N-LV4LQ100C6I5 chip in the GW1N series of the high cloud company can be adopted and programmed by using Verilog language.
In the utility model, the digital isolation module is used for isolating the external power supply circuit and the external input signal from the control chip, and mainly realizes the function of converting the external signal and the internal circuit signal. The digital isolation module comprises a digital isolation chip, can select ISO1200 series isolation chips of SkayRayleigh, and has the excellent characteristics of low power consumption, small volume, high data transmission rate and high anti-interference performance.
In the utility model, the power supply module comprises a first power supply module 11 and a second power supply module 12, wherein the first power supply module 11 is two paths of internal 24V direct current power supply input, and supplies power to a main logic chip (FPGA, ARM) and other logic chips after converting 24V into 5V direct current voltage signals through a 24V to 5V direct current voltage conversion chip. Specifically, a dc voltage conversion chip that can be used is an SGM6232YPS8G chip from saint-bang micro corporation. The second power module 12 is a two-way external 24V DC power input, which supplies power to an external circuit after converting 24V to 48V DC and 12V DC voltage signals through a 24V to 48V DC and 12V DC voltage conversion module.
In the utility model, an RS485 transceiver of the communication data bus 50 can be formed by adopting a 485 chip SIT3088EESA of CORTET, has the characteristics of low power consumption and high communication speed, and meets the high-speed real-time data communication requirement between field IO and a controller under a DCS.
In the utility model, an LED indicator lamp 70 can be further arranged and is connected to the FPGA30, and the LED indicator lamp 70 is used for intuitively indicating different states according to the operation result of the ARM20 and the communication state with the controller.
In the utility model, all components of the switching value input device, such as a power module, a digital isolation module, an FPGA, an ARM, a communication data bus, an input channel, an LED indicator light and/or the like, can be integrated on a circuit board, and a shell can be arranged outside the circuit board to protect the circuit board.
The working principle of the 16-channel switching value input device is as follows: and the first power supply module is used for supplying power to the FPGA and the ARM. Chn0-15 is an external input signal, and enters the FPGA through a multi-path optical coupler array. The monitoring program runs in the ARM, directly reads the switching value signals received by the FPGA, and can be read by the upper computer after being filtered and directly uploaded to the controller through the communication data bus. And the LED indicating lamp module is used for visually expressing different states according to the operation result of the ARM single chip microcomputer and the communication state of the controller.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A 16-channel switching value input device of a DCS system, comprising:
the power supply module is used for supplying power to the switching value input device;
16 input channels for inputting switching value signals;
a digital isolation module connected to the 16 input channels;
the FPGA is connected to the digital isolation module to acquire the switching value signal;
the ARM is connected to the FPGA to filter the switching value signal;
the communication data bus is connected to the FPGA so as to transmit the switching value signal processed by the ARM to an upper computer through the FPGA;
the power supply module comprises a first power supply module and a second power supply module, and the first power supply module is connected to the FPGA and the ARM to supply power to the FPGA and the ARM; the second power supply module supplies power to an external circuit.
2. The 16-channel switching value input device according to claim 1, wherein the input of the first power module is two-way 24V dc voltage, and the output is 5V dc voltage.
3. The 16-channel switching value input device according to claim 1, wherein the input of the second power module is two-way 24V dc voltage, and the output is 48V dc voltage and 12V dc voltage.
4. The 16-channel switching value input device according to claim 2, wherein the dc voltage conversion chip of the first power supply module is an SGM6232YPS8G chip.
5. The 16-channel switching value input device according to claim 1, wherein the digital isolation module comprises an optical coupler array and a digital isolation chip.
6. The 16-channel switching value input device according to claim 5, wherein the digital isolation chip is an ISO1200 series isolation chip.
7. The 16-channel switching value input device according to claim 1, wherein the FPGA comprises a GW1N-LV4LQ100C6I5 chip.
8. The 16-channel switching value input device of claim 1, wherein the ARM comprises an ARM M23 chip.
9. The 16-channel switching value input device of claim 1, wherein the communication data bus comprises a SIT3088EESA 485 chip.
10. The 16-channel switching value input device according to claim 1, further comprising an LED indicator light connected to the FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122507067.2U CN216351937U (en) | 2021-10-18 | 2021-10-18 | 16-channel switching value input device of DCS (distributed control system) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122507067.2U CN216351937U (en) | 2021-10-18 | 2021-10-18 | 16-channel switching value input device of DCS (distributed control system) |
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| Publication Number | Publication Date |
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| CN216351937U true CN216351937U (en) | 2022-04-19 |
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| CN202122507067.2U Active CN216351937U (en) | 2021-10-18 | 2021-10-18 | 16-channel switching value input device of DCS (distributed control system) |
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- 2021-10-18 CN CN202122507067.2U patent/CN216351937U/en active Active
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