CN217902298U - Multi-interface high-speed acquisition card - Google Patents
Multi-interface high-speed acquisition card Download PDFInfo
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- CN217902298U CN217902298U CN202222178844.8U CN202222178844U CN217902298U CN 217902298 U CN217902298 U CN 217902298U CN 202222178844 U CN202222178844 U CN 202222178844U CN 217902298 U CN217902298 U CN 217902298U
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Abstract
The utility model provides a multi-interface high-speed acquisition card, which belongs to the technical field of data transmission and processing, wherein an AD conversion module comprises a conversion module receiving terminal and a conversion module output terminal, the conversion module receiving terminal receives an analog signal, and the analog signal is converted by the AD conversion module and then is output as a digital signal by the conversion module output terminal; the output end of the conversion module is connected with the main control module; the USB interface is simultaneously connected with the main control module and the power supply module; the current input by the USB interface supplies power to the main control module and the AD conversion module after passing through the power module; the main control module transmits information with the USB interface; the USB interface is connected with the main control module and the power supply module; the current input by the USB interface supplies power for the main control module and the AD conversion module after passing through the power module, and the USB interface does not need an external 220V power supply and is convenient to use.
Description
Technical Field
The utility model relates to a data transmission and processing technology field, specifically speaking relates to a many interfaces high speed acquisition card.
Background
Data acquisition means that electric quantity or electric quantity signals are automatically acquired from analog and digital tested units such as sensors and other devices to be tested and are sent to an upper computer for analysis and processing. The data acquisition system is combined with computer or other special test platform-based measurement software and hardware products to realize a flexible and user-defined measurement system. The data acquisition card is used for acquiring various types of data, the industrial field has entered the era of interconnection of everything with the development maturity of intelligent sensing technology and internet of things technology, and top-level designs such as China manufacture 2025, industrial internet, energy internet, electric power ubiquitous internet of things are proposed, so that the construction of an intelligent sensing network is accelerated.
Application number 202022613518.6, utility model name: the utility model provides a high-speed data acquisition card, discloses to provide a high-speed data acquisition card, can carry out angular adjustment to the data acquisition card body before the wiring for the data connector of data acquisition card body perks upwards, has greatly made things convenient for the wiring, can receive and release the power below the cross slab moreover, has avoided the indiscriminate pendulum to put. The problem of high-speed data acquisition of an acquisition card is not solved, the acquisition card cannot adapt to the acquisition of data by sensors with different interfaces, a 220V power supply needs to be connected in a single power supply mode, the mode of switching an analog switch is adopted in the aspect of synchronous acquisition, and real synchronous sampling cannot be realized.
Therefore, a data acquisition card which is widely applied to power, industrial control and outdoor multi-interface, simplifies the power supply mode and can synchronously sample is needed.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a many interfaces high-speed acquisition card provides one kind and has multiple sensor interface, utilizes the USB interface power supply, can synchronous sampling high-speed acquisition card.
The technical scheme of the utility model is realized like this: a multi-interface high-speed acquisition card comprises a main control module, an AD conversion module, an output module, a power supply module and a USB interface, wherein the AD conversion module comprises a conversion module receiving end and a conversion module output end, the conversion module receiving end receives an analog signal, and the analog signal is converted by the AD conversion module and then a digital signal is output by the conversion module output end; the output end of the conversion module is connected with the main control module; the output end of the main control module is connected with the output module; the USB interface is simultaneously connected with the main control module and the power supply module; the current input by the USB interface supplies power to the main control module and the AD conversion module after passing through the power supply module; the main control module is in information transmission with the USB interface.
On the basis of the above technical solution, preferably, the USB interface includes a voltage port, a GND port, and a USB communication port.
On the basis of the above technical scheme, preferably, the power supply module includes a voltage stabilizer, the voltage stabilizer includes a voltage stabilization input end and a voltage stabilization output end, the voltage port and the GND port are connected with the voltage stabilization input end, and the voltage stabilization output end is connected with the AD conversion module and the main control module and supplies power to the AD conversion module and the main control module.
On the basis of the above technical solution, preferably, the power module further includes a reference voltage chip, the reference voltage chip includes a reference input end and a reference output end, the USB interface is connected with the reference input end, the reference output end is connected with the AD conversion module, the reference output end outputs a reference voltage, and the reference voltage is input to the AD conversion module from the reference output end.
On the basis of the above technical scheme, preferably, the power module further includes a magnetic bead, the magnetic bead includes a current input end and a current output end, the voltage port and the GND port are connected to the current input end, and the current output end is connected to the reference voltage chip.
On the basis of the above technical solution, preferably, the output module includes an ethernet interface and an RS485 interface.
On the basis of the above technical scheme, preferably, the digital signal processing circuit further comprises a sampling conditioning circuit, wherein the sampling conditioning circuit comprises a sampling input end and a sampling output end, and the sampling output end inputs an analog signal to the input end of the conversion module.
On the basis of the above technical solution, preferably, the main control module includes an I/O interface, and the I/O interface is connected with the output end of the conversion module.
The utility model discloses a high-speed capture card of many interfaces has following beneficial effect for prior art:
(1) The USB interface is connected with the main control module and the power supply module; the current input by the USB interface passes through the power supply module and then supplies power to the main control module and the AD conversion module, and a 220V power supply is not required to be externally connected, so that the USB interface is convenient to use;
(2) The AD conversion module is provided with a plurality of analog signal input channels, and a plurality of analog signal channels are used for synchronous signal acquisition, so that high-speed and high-precision synchronous transmission is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of the program of a multi-interface high-speed acquisition card of the present invention;
fig. 2 is a circuit diagram of the AD conversion module of the present invention;
fig. 3 is a circuit diagram of an ethernet interface according to the present invention;
fig. 4 is a circuit diagram of the RS485 interface of the present invention;
fig. 5 is a circuit diagram of the main control module of the present invention;
fig. 6 is a circuit diagram of the USB interface of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
As shown in fig. 1-6, a multi-interface high-speed acquisition card includes a main control module 1, an AD conversion module 2, a sampling and conditioning circuit 3, an output module 4, a power module 5, and a USB interface 6.
As shown in fig. 1 and 5, the main control module 1 adopts a control chip of a model STM32F407ZGT6, and the main control module 1 includes an I/O interface.
The sampling conditioning circuit 3, as shown in fig. 1, includes a sampling input terminal and a sampling output terminal, and the sampling output terminal outputs an analog signal.
As shown in fig. 1 and fig. 2, the AD conversion module 2 employs an AD7606 analog-to-digital conversion chip and an AD7606 analog-to-digital conversion chip, and has 8 analog signal input channels, and the 8 analog signal input channels can perform signal acquisition synchronously, and each analog signal input channel performs signal acquisition independently from each other, so that synchronous transmission can be achieved. Each analog signal input channel can be sampled at high speed at a rate of up to 200 kSPS. Meanwhile, the sampling chip is a 16-bit synchronous sampling chip and has high acquisition precision. High-precision, high-speed and synchronous sampling is realized.
The AD conversion module 2 comprises a conversion module receiving end and a conversion module output end, the conversion module receiving end is connected with the sampling output end of the sampling conditioning circuit 3, the sampling output end inputs an analog signal to the conversion module receiving end, the analog signal is converted by the AD conversion module 2 and then outputs a digital signal through the conversion module output end, the I/O interface is connected with the conversion module output end, and the digital signal is transmitted to the main control module 1 through the I/O interface.
The output end of the conversion module is connected with the main control module 1, and the digital signal is input into the main control module 1.
As shown in fig. 1 and 6, the USB interface 6 includes a voltage port, a GND port, and a USB communication port, and the voltage of the voltage port is +5V.
The power module 5, as shown in fig. 1, includes a voltage stabilizer 51, a magnetic bead 52 and a reference voltage chip 53, where the voltage stabilizer 51 is of a type RT9013-33GB, and the reference voltage chip 53 is of a type REF29XX.
The magnetic bead 52 includes a current input end and a current output end, the voltage port and the GND port are connected to the current input end, the current output end is connected to the reference voltage chip 53, the magnetic bead 52 mainly functions to suppress high-frequency interference, and the magnetic bead 52 is not applicable any more when the USB communication port communicates, so that the magnetic bead 52 is disposed between the voltage port and the GND port and the reference voltage chip 53, and does not participate in the communication function of the USB interface 6. The magnetic beads 52 are selected according to the suppression frequency, and the resonance frequency must be higher than at least 5 times of the working frequency, and on the basis, parameters such as impedance are considered.
And the voltage stabilizer 51 comprises a voltage stabilizing input end and a voltage stabilizing output end, wherein the voltage port and the GND port are connected with the voltage stabilizing input end, the voltage stabilizing output end is connected with the AD conversion module 2 and the main control module 1, power is supplied to the AD conversion module 2 and the main control module 1, and the voltage stabilizing output end outputs 3.3V voltage.
The output module 4, as shown in fig. 3 and 4, includes an ethernet interface 42 and an RS485 interface 41, where the ethernet interface 42, the RS485 interface 41, and the USB communication port can meet the requirements of various types of external devices and different data transmission rates, so that the field installation and debugging efficiency is improved, and the use is more convenient.
A use method of a multi-interface high-speed acquisition card comprises the following steps:
the sampling output end inputs an analog signal to the receiving end of the conversion module, the analog signal is converted by the AD conversion module 2 and then a digital signal is output from the output end of the conversion module, and the digital signal is transmitted to the main control module 1 by utilizing an I/O interface. The reference output end outputs a reference voltage VER, and the reference voltage VER is input to the AD conversion module 2. The voltage port and the GND port are connected with the voltage-stabilizing input end and supply power for the AD conversion module 2 and the main control module 1, and the voltage-stabilizing output end outputs 3.3V voltage.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A multi-interface high-speed acquisition card comprises a main control module (1), an AD conversion module (2), an output module (4), a power supply module (5) and a USB interface (6),
the AD conversion module (2) comprises a conversion module receiving end and a conversion module output end, the conversion module receiving end receives an analog signal, and the analog signal is converted by the AD conversion module (2) and then a digital signal is output by the conversion module output end;
the output end of the conversion module is connected with the main control module (1);
the method is characterized in that: the main control module (1) is also connected with the output module (4);
the USB interface (6) is connected with the main control module (1) and the power supply module (5);
current is input into the USB interface (6), and the current supplies power to the main control module (1) and the AD conversion module (2) after passing through the power module (5);
the main control module (1) and the USB interface (6) carry out information transmission.
2. A multi-interface high-speed acquisition card according to claim 1, characterized in that: the USB interface (6) comprises a voltage port, a GND port and a USB communication port.
3. A multi-interface high-speed acquisition card according to claim 2, characterized in that: the power supply module (5) comprises a voltage stabilizer (51), the voltage stabilizer (51) comprises a voltage stabilizing input end and a voltage stabilizing output end, the voltage port and the GND port are connected with the voltage stabilizing input end, and the voltage stabilizing output end is connected with the AD conversion module (2) and the main control module (1) and supplies power for the AD conversion module (2) and the main control module (1).
4. A multi-interface high speed acquisition card according to claim 3, characterized in that: the power module (5) further comprises a reference voltage chip (53), the reference voltage chip (53) comprises a reference input end and a reference output end, the USB interface (6) is connected with the reference input end, the reference output end is connected with the AD conversion module (2), the reference output end outputs reference voltage, and the reference voltage is input into the AD conversion module (2) through the reference output end.
5. A multi-interface high-speed acquisition card according to claim 4, characterized in that: the power module (5) further comprises a magnetic bead (52), the magnetic bead (52) comprises a current input end and a current output end, the voltage port and the GND port are connected with the current input end, and the current output end is connected with the reference voltage chip (53).
6. A multi-interface high-speed acquisition card according to claim 1, characterized in that: the output module (4) comprises an Ethernet interface (42) and an RS485 interface (41).
7. A multi-interface high-speed acquisition card according to claim 1, characterized in that: the sampling and conditioning circuit (3) comprises a sampling input end and a sampling output end, and the sampling output end inputs an analog signal to the input end of the conversion module.
8. A multi-interface high-speed acquisition card according to claim 1, characterized in that: the main control module (1) comprises an I/O interface, and the I/O interface is connected with the output end of the conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222178844.8U CN217902298U (en) | 2022-08-18 | 2022-08-18 | Multi-interface high-speed acquisition card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222178844.8U CN217902298U (en) | 2022-08-18 | 2022-08-18 | Multi-interface high-speed acquisition card |
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| Publication Number | Publication Date |
|---|---|
| CN217902298U true CN217902298U (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222178844.8U Active CN217902298U (en) | 2022-08-18 | 2022-08-18 | Multi-interface high-speed acquisition card |
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| CN (1) | CN217902298U (en) |
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- 2022-08-18 CN CN202222178844.8U patent/CN217902298U/en active Active
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