Portable oscilloscope data acquisition card

Abstract

The utility model discloses a portable oscilloscope data acquisition card which comprises an ADC acquisition module, a main control module, a signal output module, a serial port communication module and a power supply module, and the main control module is electrically connected with the ADC acquisition module, the signal output module and the serial port communication module. The power supply module is electrically connected with the ADC acquisition module, the main control module, the signal output module and the serial port communication module, and is characterized in that the ADC acquisition module comprises two OSC sampling channels, the OSC sampling channels are used as oscilloscope channels to be connected with an oscilloscope, and the ADC acquisition module further comprises four voltage channels and four current channels which are used for forming a voltage acquisition channel and a current acquisition channel.

Description

Technical Field

[0001] The utility model relates to the technical field of data acquisition cards, in particular to a portable oscilloscope data acquisition card. Background Art

[0002] The data acquisition card for the laboratory oscilloscope is an electronic board formed by combining a common circuit board and electronic components. Conventional oscilloscope data acquisition cards are generally large in size and use a single channel for data acquisition. This makes the existing oscilloscope data acquisition card inconvenient for personnel to carry and is not conducive to convenient data detection in different environments and places. Single-channel detection also cannot meet the actual experimental needs, and people have conducted a lot of research on this. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a portable oscilloscope data acquisition card, which can solve the above-mentioned problems in the existing technology.

[0004] The utility model is realized through the following technical scheme: a portable oscilloscope data acquisition card of the utility model comprises an ADC acquisition module, a main control module, a signal output module, a serial communication module and a power supply module. The main control module is electrically connected with the ADC acquisition module, the signal output module and the serial communication module. The power supply module is electrically connected with the ADC acquisition module, the main control module, the signal output module and the serial communication module. The utility model is characterized in that the ADC acquisition module comprises two OSC sampling channels, which are connected with the oscilloscope through the OSC sampling channels as oscilloscope channels, and also comprises 4 voltage channels and 4 current channels for forming voltage acquisition channels and current acquisition channels.

[0005] According to a further technical solution, the main control module includes a main controller, which receives signal data sent by the ADC acquisition module and processes, stores and transmits the signal data.

[0006] According to a further technical solution, the main controller is electrically connected to a digital I / O port, and the digital I / O port is electrically connected to an ADC acquisition module, a main control module, a signal output module, a serial communication module, and a power supply module.

[0007] According to a further technical solution, the serial communication module includes a USB interface and an Ethernet interface, and the USB interface and the Ethernet interface transmit the data processed and stored by the main control module to an external platform and establish a communication relationship with the external platform.

[0008] According to a further technical solution, the ADC acquisition module further includes an OSC_AD chip, and the OSC_AD chip transmits the signal acquired by the OSC sampling channel to the main control module.

[0009] According to a further technical solution, the signal output module includes a DA output chip, and the main control module is electrically connected to the DA output chip.

[0010] A further technical solution also includes an AD differential input chip and an AD sampling chip, wherein the AD differential input chip is electrically connected to the AD sampling chip, and the AD sampling chip is electrically connected to the main control module.

[0011] According to a further technical solution, the DA output chip is electrically connected to the AD differential input chip.

[0012] According to a further technical solution, the four voltage channels and the four current channels are electrically connected to the AD differential input chip.

[0013] A further technical solution is that the AD sampling chip uses AD7606 and the DA output chip uses MS5614.

[0014] The beneficial effects of the utility model are:

[0015] 1. The data acquisition card uses two oscilloscope channels to connect to the oscilloscope, and also uses 4 voltage channels and 4 current channels to form voltage acquisition channels and current acquisition channels, which greatly improves the sampling efficiency of the data card.

[0016] Second, the data card is small in size and easy to carry, which is conducive to data detection in different environments and places. It adopts the design of ADC acquisition module, main control module, signal output module, and serial communication module, with low energy consumption and cost, effectively solving the shortcomings of high cost and high power consumption of traditional laboratory data acquisition cards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.

[0018] Figure 1 The utility model is a circuit connection diagram of a portable oscilloscope data acquisition card. DETAILED DESCRIPTION

[0019] like Figure 1 As shown, the utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are Figure 1The up-down, left-right, front-back directions of the projection relationship are consistent. The utility model is a portable oscilloscope data acquisition card, including an ADC acquisition module, a main control module, a signal output module, a serial communication module, and a power module. The main control module is electrically connected to the ADC acquisition module, the signal output module, and the serial communication module. The power module is electrically connected to the ADC acquisition module, the main control module, the signal output module, and the serial communication module. It is characterized in that the ADC acquisition module includes two OSC sampling channels, which are connected to the oscilloscope through the OSC sampling channels as oscilloscope channels, and also includes 4 voltage channels and 4 current channels for forming voltage acquisition channels and current acquisition channels.

[0020] Advantageously, the oscilloscope channel bandwidth is 40 MHz.

[0021] Advantageously, the voltage acquisition channel has a range of ±10V.

[0022] Advantageously, the main control module includes a main controller, which can be an STM32F407ZGT6, for receiving signal data sent by the ADC acquisition module and processing, storing and transmitting the signal data. The main controller is electrically connected to a digital I / O port, and the digital I / O port is used to electrically connect to other modules or components.

[0023] Advantageously, the serial communication module includes a USB interface and an Ethernet interface, through which the data processed and stored by the main control module are transmitted to an external platform and a communication relationship is established with the external platform.

[0024] Advantageously, it also includes a power interface and a power processing module, and the power processing module is electrically connected to the main controller STM32F407ZGT6.

[0025] Advantageously, the ADC acquisition module further includes an OSC_AD chip, and the OSC_AD chip transmits the signal acquired by the OSC sampling channel to the main control module.

[0026] Advantageously, the signal output module includes a DA output chip, and the main control module is electrically connected to the DA output chip.

[0027] Advantageously, it further comprises an AD differential input chip and an AD sampling chip, the DA output chip is electrically connected to the AD differential input chip, the AD differential input chip is electrically connected to the AD sampling chip, and the AD sampling chip is electrically connected to the main control module for transmitting signals.

[0028] Advantageously, the four voltage channels and the four current channels are electrically connected to the AD differential input chip and the AD sampling chip to transmit the signals to the main control module.

[0029] Advantageously, the AD sampling chip may be AD7606, and the DA output chip may be MS5614.

[0030] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A portable oscilloscope data acquisition card, comprising an ADC acquisition module, a main control module, a signal output module, a serial communication module, and a power module, wherein the main control module is electrically connected to the ADC acquisition module, the signal output module, and the serial communication module, and the power module is electrically connected to the ADC acquisition module, the main control module, the signal output module, and the serial communication module, and is characterized in that the ADC acquisition module comprises two OSC sampling channels, which are connected to the oscilloscope through the OSC sampling channels as oscilloscope channels, and further comprises 4 voltage channels and 4 current channels, which are used to form voltage acquisition channels and current acquisition channels.

2. A portable oscilloscope data acquisition card according to claim 1, characterized in that: The main control module includes a main controller, which receives the signal data sent by the ADC acquisition module and processes, stores and transmits the signal data.

3. A portable oscilloscope data acquisition card according to claim 2, characterized in that: The main controller is electrically connected to a digital I / O port, and the digital I / O port is electrically connected to an ADC acquisition module, a main control module, a signal output module, a serial communication module, and a power supply module.

4. A portable oscilloscope data acquisition card according to claim 1, characterized in that: The serial communication module includes a USB interface and an Ethernet interface, which transmit the data processed and stored by the main control module to the external platform to establish a communication relationship.

5. The portable oscilloscope data acquisition card according to claim 1, characterized in that: The ADC acquisition module also includes an OSC_AD chip, which transmits the signal acquired by the OSC sampling channel to the main control module.

6. A portable oscilloscope data acquisition card according to any one of claims 1 to 5, characterized in that: It also includes an AD differential input chip and an AD sampling chip. The AD differential input chip is electrically connected to the AD sampling chip, and the AD sampling chip is electrically connected to the main control module.

7. A portable oscilloscope data acquisition card according to claim 6, characterized in that: The signal output module comprises a DA output chip, the main control module is electrically connected to the DA output chip, and the DA output chip is electrically connected to the AD differential input chip.

8. A portable oscilloscope data acquisition card according to claim 6, characterized in that: The four voltage channels and the four current channels are electrically connected to the AD differential input chip.

9. A portable oscilloscope data acquisition card according to claim 7, characterized in that: The AD sampling chip uses AD7606, and the DA output chip uses MS5614.

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