CN210428444U - Programmable data acquisition card - Google Patents
Programmable data acquisition card Download PDFInfo
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- CN210428444U CN210428444U CN201922077679.5U CN201922077679U CN210428444U CN 210428444 U CN210428444 U CN 210428444U CN 201922077679 U CN201922077679 U CN 201922077679U CN 210428444 U CN210428444 U CN 210428444U
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Abstract
The utility model relates to a device in the field of computer information transmission, in particular to a programmable data acquisition card, which comprises a power supply circuit, a programming electric control circuit, a first conversion circuit for usb to serial ports, a second conversion circuit for level control, an upper computer communication circuit for acquiring programming data, a first programming interface for accessing a programming chip, a second programming interface for a universal programming chip and an MCU, the programming electric control circuit, the power supply circuit and the second conversion circuit are electrically connected in sequence, the first conversion circuit, the second conversion circuit and the MCU are electrically connected in sequence, the MCU is respectively electrically connected with the display circuit, the upper computer communication circuit and the first programming interface, the first programming interface is electrically connected with the second programming interface, and the first programming interface is electrically connected with a programmable chip of the data acquisition card.
Description
Technical Field
The utility model relates to a computer information transmission field device especially relates to a data acquisition card able to programme.
Background
Generally, data acquisition refers to automatically acquiring analog or digital signals to be measured of equipment and sending the signals to an upper computer for analysis and processing. The data acquisition card, namely a computer expansion card for realizing the data acquisition function, can be accessed into a computer through buses such as USB, PXI, PCI Express, Ethernet, various wireless networks and the like; in the prior art, the data acquisition card has a single function, and sometimes a user such as an individual electronic fan wants to set interrupt priority or time sequence control on a hardware interface of the data acquisition card, however, the setting of an external interface needs to change the corresponding external structure of a plurality of hardware, and a switch and a programming control circuit are also needed, so that the cost is high and the operation is difficult.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
programmable data acquisition card, including power supply circuit, programming electric control circuit, be used for the usb to the serial ports first converting circuit, be used for level control second converting circuit, be used for obtaining programming data's host computer communication circuit, be used for accessing programming chip's first programming interface, be used for the second programming interface and the MCU of universality programming chip, programming electric control circuit, power supply circuit, second converting circuit electricity in proper order connect, first converting circuit, second converting circuit and MCU electricity in proper order connect, MCU respectively with show circuit, host computer communication circuit, first programming interface electricity connect, first programming interface and second programming interface electricity connect, first programming interface and data acquisition card's programmable chip electricity connect.
Furthermore, the power supply circuit comprises a voltage regulating circuit, the voltage regulating circuit is provided with multiple stages, and each circuit at the rear stage of the voltage regulating circuit supplies power.
Further, the first programming interface adopts a wireless Bluetooth module and specifically can use a Bluetooth 5.0BLE module, the upper computer adopts a PC, and the communication circuit of the upper computer adopts a USB protocol module and has a module which can use a USB-4702-AE model.
Further, MCU adopt STM series singlechip, can use STM32F1 singlechip specifically.
Furthermore, the programmable chip of the data acquisition card adopts a singlechip.
Advantageous effects
The programming control of a programmable chip of the data acquisition card is realized through a set programming interface and an MCU (microprogrammed control unit); the programmable chip can be programmed to allocate priority or time sequence allocation which is more suitable for requirements to each hardware interface for data acquisition, and the interrupt priority and time sequence control of each hardware interface when the data acquisition card acquires data can be changed, so that a user can program the data acquisition card according to the requirements and control the data acquisition card.
Drawings
Fig. 1 is a circuit connection block diagram according to an embodiment of the present invention.
Detailed Description
Programmable data acquisition card, in the concrete implementation, as fig. 1, the utility model discloses a supply circuit, programming electric control circuit, be used for the usb to the serial ports first converting circuit, be used for level control the second converting circuit, be used for obtaining the host computer communication circuit of programming data, be used for inserting programming chip's first programming interface, be used for the second programming interface and the MCU of universality programming chip, programming electric control circuit, supply circuit, second converting circuit electricity in proper order connect, first converting circuit, second converting circuit and MCU electricity in proper order connect, MCU respectively with show circuit, host computer communication circuit, first programming interface electricity and second programming interface electricity connect, first programming interface be connected with data acquisition card's programmable chip electricity.
The power supply circuit comprises a voltage regulating circuit, the voltage regulating circuit is provided with multiple stages, and each circuit behind the voltage regulating circuit supplies power.
The first programming interface adopts a wireless Bluetooth module, and specifically can use a Bluetooth 5.0BLE module, such as a BLE0305C2P Bluetooth module, which realizes the function of data transmission through a UART port and remote-end Bluetooth low energy. After the module is powered on and runs, the module enters a communication mode or a configuration mode according to the level value of the ModeSW pin. In the configuration mode, a user can configure parameters of the module, such as the name of the device, the baud rate, the power management mode and the like. In this state, the module cannot be discovered/connected and is always in the wake-up state. The upper computer adopts a PC, and the communication circuit of the upper computer adopts a USB protocol module which has a module capable of using USB-4702-AE model; the USB controller supports USB 2.0, bus power supply, 8-channel analog input, 12-bit resolution AI, sampling rate of 10kS/s, 8-channel digital input/8-channel digital output, 2-channel analog output and a 32-bit counter; the MCU adopts an STM series singlechip, and specifically can use an STM32F1 singlechip; for example, STM32F1, which has a dual 12-bit ADC of 1 μ s, a UART of 4 megabits/second, an SPI of 18 megabits/second, an I/O flip speed of 18MHz, low power consumption, consumes 36mA at 72MHz (all peripherals are in working state), and falls to 2 μ a in standby, and it is a simple structure and easy-to-use tool with a reset circuit, low voltage detection, voltage regulator, accurate RC oscillator, etc. for maximum integration, and more specific parameters: 2.0V-3.6V power supply, compatible 5V's IO pin, excellent safe clock mode, the low-power consumption mode of function is awaken up in the area, inside RC oscillator, embedded reset circuit, operating temperature range: -40 ℃ to +85 ℃ or 105 ℃. The programmable chip of the data acquisition card adopts a singlechip.
The programming electric control circuit is used for providing controllable programming voltage or element working internal voltage when the chip is programmed, and the display circuit controls the running state information of the display chip of the external display screen; the second conversion circuit converts the level to isolate the voltage of the MCU from the voltage of the programmable chip; the upper computer communication circuit is connected with the MCU and the programming data source and is responsible for communication between the MCU and the programming data source, when the upper computer communication circuit starts to start a pin signal to be 1, the MCU starts to program the programmable chip, and when the upper computer communication circuit outputs a pin waiting/passing/no-fault pin signal, batch programming can be carried out; the first programming interface is used as a programming interface for programming a single chip and is used during debugging programs; the second programming interface is designed specifically for chips with different numbers of pins. The programming process is as follows: firstly, powering on hardware; then, running a user program; then, a common PC machine can be used as a programming data source, application and an interface thereof are specifically developed on the common PC, a programmable chip is selected through PC interface operation, and an internal solid piece is rewritten to realize online programming; in addition, the programming data of the programmable chip can be downloaded to the programming data area of the MCU, and then the programmable chip is connected with the MCU for off-line programming; in specific implementation, priority or time sequence distribution more suitable for requirements can be distributed to each hardware interface for data acquisition through programming of the programmable chip, and the interrupt priority and time sequence control of each hardware interface when the data acquisition card acquires data can be changed, so that a user can program the data acquisition card according to the requirements of the user and control the data acquisition card.
Claims (5)
1. Programmable data acquisition card, its characterized in that, including supply circuit, programming electric control circuit, be used for the usb to the first converting circuit of serial ports, be used for level control the second converting circuit, be used for obtaining the host computer communication circuit of programming data, be used for to insert programming chip's first programming interface, be used for the second programming interface and the MCU of universality programming chip, programming electric control circuit, supply circuit, second converting circuit electricity in proper order connect, first converting circuit, second converting circuit and MCU electricity in proper order connect, MCU respectively with display circuit, host computer communication circuit, first programming interface electricity connect, first programming interface and second programming interface electricity connect, first programming interface be connected with data acquisition card's programmable chip electricity.
2. A programmable data acquisition card according to claim 1, wherein said power supply circuit comprises a voltage regulation circuit having a plurality of stages, each circuit following the voltage regulation circuit supplying power.
3. A programmable data acquisition card as claimed in claim 1, wherein said first programming interface employs a wireless bluetooth module, and specifically employs a bluetooth 5.0BLE module, said host computer employs a PC, and said host computer communication circuit employs a USB protocol module, and specifically employs a USB-4702-AE model module.
4. A programmable data acquisition card as claimed in claim 1, wherein said MCU is a STM series single chip microcomputer, and specifically, STM32F1 single chip microcomputer can be used.
5. A programmable data acquisition card as in claim 1 wherein said programmable chip of said data acquisition card is implemented as a single chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922077679.5U CN210428444U (en) | 2019-11-27 | 2019-11-27 | Programmable data acquisition card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922077679.5U CN210428444U (en) | 2019-11-27 | 2019-11-27 | Programmable data acquisition card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210428444U true CN210428444U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922077679.5U Active CN210428444U (en) | 2019-11-27 | 2019-11-27 | Programmable data acquisition card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210428444U (en) |
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2019
- 2019-11-27 CN CN201922077679.5U patent/CN210428444U/en active Active
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