CN217588068U

CN217588068U - Multichannel synchronous power acquisition card based on high-speed USB

Info

Publication number: CN217588068U
Application number: CN202122927342.6U
Authority: CN
Inventors: 张晓�; 张爱琼
Original assignee: Anhui Kpi Automatic Technology Co ltd
Current assignee: Anhui Kpi Automatic Technology Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-10-14
Anticipated expiration: 2031-11-24

Abstract

The invention discloses a high-speed USB-based multichannel synchronous power acquisition card, which comprises a processing module, an acquisition module and a high-speed input/output module, wherein the processing module comprises a clock circuit, a crystal oscillator circuit and a main processing module, the acquisition module comprises an acquisition sub-card group, a filtering module and a conversion module, the processing module comprises a cache module, a main control module and an I/O (input/output) end, the output module comprises a display and a communication module, a USB (universal serial bus) control module is arranged in the communication module, the acquisition sub-card group is connected with an A/D (analog/digital) conversion group, the acquisition sub-card group is provided with a voltage/current sensor, the A/D conversion group is connected with the I/O end, and the main control module is connected with the display and the communication module.

Description

Multichannel synchronous power acquisition card based on high-speed USB

Technical Field

The invention belongs to the field of power quality monitoring, and particularly relates to a high-speed USB-based multi-channel synchronous power acquisition card.

Background

The electric energy quality monitoring and testing is an important program part for power grid quality testing, along with the rapid development of electric power, the electric power is an indispensable part in life at present, a large number of unstable factors exist in the transmission process of the electric power, the controllable requirement in industrial control is higher and higher, meanwhile, the wireless communication technology is developed at a rapid speed, the application scenes are increasingly diverse, communication, automation, electronic measurement and the like, the data acquisition card on the market at present can only realize single-channel low-speed acquisition on an acquisition target, synchronous acquisition is realized under the condition that multiple channels are not realized, a serial sequential transmission mode is only adopted on interface transmission, data result transmission cannot be simultaneously carried out on the multiple channels on a data interface, the data transmission process is slow, the judgment on the accuracy of electric energy quality monitoring equipment is influenced, because the ADC and the sampling holder are core devices for sampling, in order to reduce the cost of the acquisition board, the acquisition card at present adopts the channel switching of the ADC and the sampling holder in cooperation with the multiple switches to realize the multiple-channel acquisition, and the problem that the sampling mode can bring the inter-channel crosstalk and the synchronous acquisition cannot be realized.

Therefore, the invention mainly provides a multi-channel synchronous power acquisition card based on a high-speed USB, and mainly solves the problem that acquisition card equipment cannot maintain diverse high-speed acquisition and multi-channel seamless synchronous acquisition.

The invention mainly provides a high-speed USB-based multichannel synchronous power acquisition card, and mainly solves the problem that acquisition card equipment cannot keep diverse high-speed acquisition and multichannel seamless synchronous acquisition.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the invention is realized by the following technical scheme:

the utility model provides a multichannel synchronous electric power collection card based on high-speed USB, includes processing module, collection module and high-speed input/output module, processing module includes clock circuit, crystal oscillator circuit, main processing module, collection module is including gathering daughter card group, filtering module, conversion module, processing module includes cache module, host system and IO end, output module includes display and communication module, be provided with USB control module in the communication module, gather daughter card group connection AD conversion group, it all is provided with voltage/current sensor to gather daughter card group, AD conversion group connects the IO end, host system connects display and communication module.

Furthermore, a USB control module for comprehensive high-speed data transmission is arranged in the communication module, a USB3.0 high-speed interface is connected outside the USB control module, and the USB3.0 high-speed interface is connected with an input/output module of a computer.

Furthermore, a plurality of A/D conversion chips are installed in the A/D conversion group, the A/D conversion chip is AD7606 in use model, the main control module processor adopts STM32F429, and the USB3.0 adopts GL3520-OS32 chips.

Furthermore, a clock circuit, a crystal oscillator circuit and an RAM cache module are connected outside the main control module, the A/D conversion group is connected with a filter circuit for filtering and integrating, each A/D conversion chip can be connected with 24-channel analog equipment for data conversion, and the clock circuit is connected with the main control module for seamless synchronous acquisition.

Furthermore, the main control module can receive the acquisition information of the FPGA logic unit, the FPGA logic unit receives the digital processing module, the sensing module acquires information of the real-time circuit, the acquisition information is input through the interface module, the acquisition information is integrated in the analog signal integration unit for modulation and isolation, the acquisition information is converted into digital signals through the conversion module and then received by the digital signal processing module, and the main control module can externally perform high-number transmission evaluation results through the communication module and can control and process the processing module.

The invention has the following beneficial effects:

the self-card group is collected into a plurality of external power grid monitoring devices, analog-to-digital conversion is carried out through A/D conversion in the device, filter integration is carried out on converted data under a filter circuit, digital signal data can be received through an I/O end of a processor after the digital signal data are completed, digital information is processed under a clock circuit and a crystal oscillator circuit, partial information of the data is displayed on a display screen, meanwhile, the data can be transmitted to a communication module, the data can be analyzed and adjusted under the action of a USB control module in the communication module, pin definition of a USB3.0 high-speed interface is adjusted, downward compatibility under the condition of keeping high speed is guaranteed, data transmission is carried out through a USB3.0 pair, the USB and the input and output ends of a computer can constantly keep communication, the computer can carry out internal addition control through the communication module and receive data results at the same time.

Of course, it is not necessary for any product to practice the invention to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1: the basic structure of the invention is connected with the figure;

FIG. 2 is a schematic diagram: the invention is a connection diagram of internal elements;

FIG. 3: the invention is a flow chart.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

As shown in fig. 1-3: a multi-channel synchronous power acquisition card based on a high-speed USB comprises a processing module, an acquisition module and a high-speed input/output module, wherein the processing module comprises a clock circuit, a crystal oscillator circuit and a main processing module, the acquisition module comprises an acquisition sub-card group, a filtering module and a conversion module, the processing module comprises a cache module, a main control module and an I/O (input/output) end, the output module comprises a display and a communication module, a USB (universal serial bus) control module is arranged in the communication module, the acquisition sub-card group is connected with an A/D (analog/digital) conversion group, the acquisition sub-card group is provided with a voltage/current sensor, the A/D conversion group is connected with the I/O end, and the main control module is connected with the display and the communication module; the acquisition daughter card is provided with a plurality of acquisition devices in group to possess voltage/current sensor in the acquisition daughter card, can carry out data acquisition to the circuit, carry out analog-to-digital conversion through AD chip in the AD conversion group, carry out filtering integration to internal data under filter circuit's effect simultaneously, digital signal after the conversion is accomplished can carry out the contrast processing through processing module, is exported by high-speed input/output module at last.

As shown in fig. 2: a USB control module for comprehensively transmitting data at high speed is arranged in the communication module, a USB3.0 high-speed interface is connected outside the USB control module, and the USB3.0 high-speed interface is connected with an input/output module of a computer; the USB3.0 interface is used for the connection of output interface, can be internal carry out the transmission course of signal under communication module, inside USB control module can automatic control USB3.0 high-speed interface carry out automatically regulated simultaneously, guarantee data transmission's stability, inside can carry out the analysis to data simultaneously, and it is downward compatible, high-speed USB3.0 communication protocol can improve the bandwidth and reach 5 Gbps's full duplex state, better power management has been realized, can make the host computer provide more power for the device, thereby realize USB more extensive application, and can make the quick identification device of host computer, make data processing's efficiency higher.

As shown in fig. 2: a plurality of A/D conversion chips are installed in the A/D conversion group, the A/D conversion chips are AD7606 in model, the main control module processor adopts STM32F429, and the USB3.0 adopts GL3520-OS32 chips; AD7606 can receive analog signals in 8 external acquisition sub-card groups at the same time for digital-to-analog conversion, and send data in the form of data group, STTM32F429 can control each element of data, process data, and connect with communication and module in real time, so as to keep high speed and stability of data transmission.

As shown in fig. 2: the master control module is externally connected with a clock circuit, a crystal oscillator circuit and an RAM (random access memory) cache module, the A/D conversion group is connected with a filter circuit for filtering and integrating, each A/D conversion chip can be connected with 24-channel analog equipment for data conversion, and the clock circuit is connected with the master control module and can perform seamless synchronous acquisition on the master control module; the clock circuit and the crystal oscillator circuit outside the main control module can regulate data of the processor, guarantee accuracy in time and position, temporarily store the data in the RAM cache module after receiving digital signals and processing the digital signals, and transmit data results.

As shown in fig. 3: the main control module receives the acquisition information of the FPGA logic unit, the FPGA logic unit receives the digital processing module, the sensing module acquires information of the real-time circuit, inputs the acquisition information through the interface module, is integrated in the analog signal integration unit for modulation and isolation, converts the acquisition information into digital signals through the conversion module, and then receives the digital signals through the digital signal processing module, and the main control module performs high-number transmission evaluation results to the outside through the communication module and can control and process the processing module; the sensing module detects circuit data to generate an analog signal, the signal is transmitted to the analog receiving unit through the interface module, modulation and isolation are carried out in the unit, the signal is converted, a comfortable signal is processed, and finally the signal is processed by the main processing module, and the main processing module can carry out high-speed transmission of the signal through the communication module and the computer.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a synchronous electric power collection card of multichannel based on high-speed USB, includes processing module, collection module and high-speed input/output module, processing module includes clock circuit, crystal oscillator circuit, main processing module, collection module is including gathering daughter card group, filter module, conversion module, processing module includes buffer module, host system and IO end, output module includes display and communication module, be provided with USB control module in the communication module, gather daughter card group link AD conversion group, it all is provided with voltage/current sensor to gather daughter card group, AD conversion group link IO end, host system connects display and communication module.

2. The high-speed USB-based multi-channel synchronous power acquisition card according to claim 1, wherein: the communication module is internally provided with a USB control module for comprehensive high-speed data transmission, the USB control module is externally connected with a USB3.0 high-speed interface, and the USB3.0 high-speed interface is connected with an input/output module of a computer.

3. The high-speed USB-based multi-channel synchronous power acquisition card according to claim 1, wherein: a plurality of A/D conversion chips are installed in the A/D conversion group, the A/D conversion chip is AD7606 in usage model, STM32F429 is adopted by the main control module processor, and GL3520-OS32 chips are adopted by the USB 3.0.

4. The high-speed USB-based multi-channel synchronous power acquisition card according to claim 1, wherein: the external clock circuit, crystal oscillator circuit, RAM buffer module of being connected with of master control module, the AD conversion group is connected with filter circuit and can carries out filtering integration and each AD conversion chip can connect 24 passageway analog device and carry out data conversion, clock circuit connection master control module can carry out seamless synchronous acquisition to it.

5. The high-speed USB-based multi-channel synchronous power acquisition card according to claim 1, wherein: the main control module can receive the acquisition information of the FPGA logic unit, the FPGA logic unit receives the digital processing module, the sensing module acquires information of the real-time circuit, the acquisition information is input through the interface module, the acquisition information is integrated in the analog signal integration unit for modulation and isolation, the acquisition information is converted into digital signals through the conversion module and then received by the digital signal processing module, and the main control module can externally perform high-number transmission evaluation results through the communication module and can control and process the processing module.