CN219143443U - Data processing circuit with flexible selection of multichannel current and voltage - Google Patents
Data processing circuit with flexible selection of multichannel current and voltage Download PDFInfo
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- CN219143443U CN219143443U CN202320002272.XU CN202320002272U CN219143443U CN 219143443 U CN219143443 U CN 219143443U CN 202320002272 U CN202320002272 U CN 202320002272U CN 219143443 U CN219143443 U CN 219143443U
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The utility model relates to a data processing circuit with flexible selection of multichannel current and voltage, which comprises a signal input connector, an overvoltage short-circuit protection module, a constant current source, a multichannel analog switch, a channel change-over switch, a voltage signal acquisition module, a current signal acquisition module, an FPGA and a PCI connector, wherein the signal input connector is connected with the overvoltage short-circuit protection module; the signal input connector is connected with the overvoltage short-circuit protection module, the overvoltage short-circuit protection module and the constant current source are connected with the multipath analog switch, the multipath analog switch is connected with the channel change-over switch, the channel change-over switch is respectively connected with the voltage signal acquisition module and the current signal acquisition module, the voltage signal acquisition module and the current signal acquisition module are connected with the FPGA, and the FPGA is connected with the PCI connector. The utility model can collect up to 40 paths of voltage/current signals according to the needs of users, can be flexibly configured into voltage or current, improves the compatibility of input signals of the data module, and is convenient for interconnection and intercommunication with external equipment by adopting standard specifications.
Description
Technical Field
The utility model relates to the technical field of data acquisition and processing, in particular to a data processing circuit with flexibly selectable multichannel current and voltage.
Background
At present, most of the existing analog data processing module circuits are usually of a single voltage input type or a single current input type, and when the input sources of the system are voltage data and current data, the voltage data acquisition card and the current data acquisition card are required to be respectively configured, however, the limitation of the input sources of a user is greatly limited, the complexity of the user system is increased, the flexible design of the system by the user is not facilitated, and meanwhile, the management cost of the user is increased.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, provides a data processing circuit with flexibly selectable multi-channel current and voltage, and solves the problems of the existing analog data processing module circuit.
The aim of the utility model is achieved by the following technical scheme: a data processing circuit with flexibly selectable multichannel current and voltage comprises a signal input connector, an overvoltage short-circuit protection module, a constant current source, a multichannel analog switch, a channel change-over switch, a voltage signal acquisition module, a current signal acquisition module, an FPGA and a PCI connector;
the output end of the signal input connector is connected with the input end of the overvoltage short-circuit protection module, the output ends of the overvoltage short-circuit protection module and the constant current source are connected with the input ends of the multipath analog switch, the output ends of the multipath analog switch are connected with the input ends of the channel change-over switch, the output ends of the channel change-over switch are respectively connected with the input ends of the voltage signal acquisition module and the current signal acquisition module, the output ends of the voltage signal acquisition module and the current signal acquisition module are connected with the input ends of the FPGA, the FPGA is connected with the PCI connector through a PCI bus, and the FPGA is connected with the channel change-over switch through an I/O port.
The voltage signal acquisition module comprises a first operational amplifier and an ADC voltage acquisition chip; the output end of the channel change-over switch is connected with the input end of the first operational amplifier, the output end of the first operational amplifier is connected with the input end of the ADC voltage acquisition chip, and the output end of the ADC voltage acquisition chip is connected with the signal acquisition input end of the FPGA.
The current signal acquisition module comprises an acquisition resistor, a second operational amplifier and an ADC current acquisition chip; the output end of the channel change-over switch is connected with the input end of the second operational amplifier, meanwhile, the second operational amplifier is connected with the acquisition resistor, the output end of the second operational amplifier is connected with the input end of the ADC current acquisition chip, and the output end of the ADC current acquisition chip is connected with the signal acquisition input end of the FPGA.
The utility model has the following advantages: a data processing circuit with flexible choice of multi-channel current and voltage can collect up to 40 paths of voltage/current signals according to the needs of users, the 40 paths of signals can be flexibly configured into voltage or current, the compatibility of input signals of a data module is improved, and meanwhile, standard PCI104 specifications are adopted, so that the data processing circuit is convenient to interconnect and communicate with external equipment.
Drawings
Fig. 1 is a schematic circuit structure of the present utility model.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Accordingly, the following detailed description of the embodiments of the present application, provided in connection with the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application. The utility model is further described below with reference to the accompanying drawings.
As shown in FIG. 1, the utility model specifically relates to a data processing circuit with flexibly selectable multichannel current and voltage, which comprises a signal input connector, an overvoltage short-circuit protection module, a constant current source, a multichannel analog switch, a channel change-over switch, a voltage signal acquisition module, a current signal acquisition module, an FPGA and a PCI connector; the overvoltage short-circuit protection module is an overvoltage protection and short-circuit protection recovery fuse;
further, the output end of the signal input connector is connected with the input end of the overvoltage short-circuit protection module, the output ends of the overvoltage short-circuit protection module and the constant current source are connected with the input ends of the multipath analog switch, the output ends of the multipath analog switch are connected with the input ends of the channel change-over switch, the output ends of the channel change-over switch are respectively connected with the input ends of the voltage signal acquisition module and the current signal acquisition module, the output ends of the voltage signal acquisition module and the current signal acquisition module are connected with the input ends of the FPGA, the FPGA is connected with the PCI connector through a PCI bus, and the FPGA is connected with the channel change-over switch through an I/O port.
Further, the voltage signal acquisition module comprises a first operational amplifier and an ADC voltage acquisition chip; the output end of the channel change-over switch is connected with the input end of the first operational amplifier, the output end of the first operational amplifier is connected with the input end of the ADC voltage acquisition chip, and the output end of the ADC voltage acquisition chip is connected with the signal acquisition input end of the FPGA.
Further, the current signal acquisition module comprises an acquisition resistor, a second operational amplifier and an ADC current acquisition chip; the output end of the channel change-over switch is connected with the input end of the second operational amplifier, meanwhile, the second operational amplifier is connected with the acquisition resistor, the output end of the second operational amplifier is connected with the input end of the ADC current acquisition chip, and the output end of the ADC current acquisition chip is connected with the signal acquisition input end of the FPGA.
The working process of the utility model is as follows: when the input is a voltage signal, the channel change-over switch sends the signal to an operational amplifier of the voltage signal acquisition module, the amplified voltage signal is sent to the ADC voltage acquisition chip, and the FPGA sends the voltage signal acquired by the ADC voltage acquisition chip to the PCI104 connector through the PCI bus for external interconnection and intercommunication. When the input is a current signal, the channel change-over switch sends the signal to the operational amplifier of the current signal acquisition module, the current channel operational amplifier changes the current signal into a voltage signal through the current on the acquisition resistor R, the converted voltage signal is sent to the ADC current channel acquisition chip, and the FPGA sends the voltage signal acquired by the ADC current acquisition chip to the PCI104 connector for external interconnection and intercommunication through the PCI bus.
The utility model has up to 40 paths of voltage or current signals accessed through the signal input connector, and enter the 48-selection 1 channel change-over switch after passing through the voltage short-circuit protection fuse and the 48 paths of multipath analog switches. The FPGA provides an interaction channel between the data acquired by the AD and external equipment. The AD chip configuration information and the AD data are integrated in the PCI packet format module and the PCI bus protocol.
The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (3)
1. A data processing circuit with flexible choice of multi-channel current and voltage, characterized in that: the device comprises a signal input connector, an overvoltage short-circuit protection module, a constant current source, a multipath analog switch, a channel change-over switch, a voltage signal acquisition module, a current signal acquisition module, an FPGA and a PCI connector;
the output end of the signal input connector is connected with the input end of the overvoltage short-circuit protection module, the output ends of the overvoltage short-circuit protection module and the constant current source are connected with the input ends of the multipath analog switch, the output ends of the multipath analog switch are connected with the input ends of the channel change-over switch, the output ends of the channel change-over switch are respectively connected with the input ends of the voltage signal acquisition module and the current signal acquisition module, the output ends of the voltage signal acquisition module and the current signal acquisition module are connected with the input ends of the FPGA, the FPGA is connected with the PCI connector through a PCI bus, and the FPGA is connected with the channel change-over switch through an I/O port.
2. A multi-channel current and voltage flexible selectable data processing circuit as defined in claim 1, wherein: the voltage signal acquisition module comprises a first operational amplifier and an ADC voltage acquisition chip; the output end of the channel change-over switch is connected with the input end of the first operational amplifier, the output end of the first operational amplifier is connected with the input end of the ADC voltage acquisition chip, and the output end of the ADC voltage acquisition chip is connected with the signal acquisition input end of the FPGA.
3. A multi-channel current and voltage flexible selectable data processing circuit as defined in claim 2 wherein: the current signal acquisition module comprises an acquisition resistor, a second operational amplifier and an ADC current acquisition chip; the output end of the channel change-over switch is connected with the input end of the second operational amplifier, meanwhile, the second operational amplifier is connected with the acquisition resistor, the output end of the second operational amplifier is connected with the input end of the ADC current acquisition chip, and the output end of the ADC current acquisition chip is connected with the signal acquisition input end of the FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320002272.XU CN219143443U (en) | 2023-01-03 | 2023-01-03 | Data processing circuit with flexible selection of multichannel current and voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320002272.XU CN219143443U (en) | 2023-01-03 | 2023-01-03 | Data processing circuit with flexible selection of multichannel current and voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219143443U true CN219143443U (en) | 2023-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320002272.XU Active CN219143443U (en) | 2023-01-03 | 2023-01-03 | Data processing circuit with flexible selection of multichannel current and voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219143443U (en) |
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2023
- 2023-01-03 CN CN202320002272.XU patent/CN219143443U/en active Active
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