Signal synchronous acquisition and real-time calibration integrated board card

Abstract

The utility model discloses a signal synchronous acquisition and real-time calibration integrated board card, and relates to the technical field of signal synchronous acquisition. The device comprises a PCB, the left edge of the PCB is provided with a signal input interface, the central position of the PCB is provided with a clock module, the clock module is connected with the signal input interface through PCB wires, the right side of the PCB is provided with a plurality of analog-to-digital converters, each analog-to-digital converter is connected with the signal input interface through the PCB wires, and the analog-to-digital converters are connected with the signal input interface through the PCB wires. The analog-to-digital converter is also connected with the clock module; a microprocessor unit is arranged at the top of the PCB, is connected with the analog-to-digital converter and is used for collecting and processing sampled data; and the memory module is arranged below the microprocessor unit and is connected with the microprocessor unit through a serial interface. According to the utility model, the clock module is arranged at the central position of the PCB, so that a stable and accurate time reference is provided for a system, and high time synchronization can be achieved when the analog-to-digital converter performs signal sampling.

Description

TECHNICAL FIELD

[0001] The utility model belongs to signal synchronous acquisition technical field, especially relate to a signal synchronous acquisition and real -time calibration integrated board card. BACKGROUND

[0002] Signal synchronous acquisition system is widely used in scientific experiment, industrial monitoring, medical equipment, communication system and many other fields, and its main task is to accurately capture the data of multiple signal sources, and ensure that these data can be accurately aligned in time, so as to carry out effective analysis and processing.

[0003] Early signal acquisition system often lacks effective synchronization mechanism, leading to time offset of the data collected in different channels or different devices, which is particularly fatal in the application requiring high-precision synchronization, and due to long signal path or unreasonable design, external electromagnetic interference (EMI) or other types of noise are easily introduced, affecting signal quality.

[0004] Therefore, we provide a signal synchronous acquisition and real-time calibration integrated board card to solve the above problems. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model is realized through the following technical schemes:

[0006] The utility model discloses a signal synchronous acquisition and real-time calibration integrated board card, including the PCB board, the left side edge of the PCB board is provided with signal input interface, and the central position of the PCB board is provided with clock module, and is connected with signal input interface through PCB wiring, the right side of the PCB board is equipped with a plurality of analog-digital converters, and each analog-digital converter is also connected with signal input interface through PCB wiring, and the analog-digital converter is also connected with clock module;

[0007] The top of the PCB board is equipped with microprocessor unit, and the microprocessor unit is connected with the analog-digital converter, and is used to collect and process the data of sampling, and the microprocessor unit is equipped with memory module below, and the two are connected through serial interface.

[0008] The utility model further sets up, the signal input interface includes a plurality of BNC joints, and the BNC joint is evenly distributed along the left side edge of the PCB board, and the BNC joint is connected with analog front end amplifier through coaxial cable, and the analog front end amplifier is arranged close to the analog-digital converter.

[0009] The utility model further sets up, the clock module is composed of temperature compensation crystal oscillator, and is connected with each analog-digital converter and microprocessor unit through a plurality of shielded wires.

[0010] The utility model further sets up, the PCB board bottom near the edge is provided with power management unit, power management unit is through power bus for the whole board card power supply, and has independent voltage stabilizing output port respectively to clock module, microprocessor unit and analog digital converter supply stable voltage.

[0011] The utility model further sets up, the PCB board right upper corner is equipped with USB interface, USB interface is connected with microprocessor unit.

[0012] The utility model further sets up, the left lower corner of PCB board is provided with expansion interface, its expansion interface is connected with microprocessor unit through input / output pin.

[0013] The utility model further sets up, the corner of PCB board is equipped with the positioning hole for screw installation, its PCB board corner is fixed with external support structure through screw.

[0014] The utility model has the following beneficial effects:

[0015] 1, the utility model discloses a clock module is arranged in the central position of PCB board, and adopts temperature compensation crystal oscillator, provides stable and accurate time reference for the system, ensures that analog digital converter can reach high time synchronization when carrying out signal sampling.

[0016] 2, the utility model discloses the signal input interface that sets up includes a plurality of BNC joints, which are evenly distributed along the left side edge of PCB board, and are directly connected to analog front end amplifier through coaxial cable, shorten the physical distance of signal from input to amplification, reduce the possibility of external interference and noise introduction, thereby improve the purity and collection quality of signal.

[0017] 3, the utility model discloses that every analog digital converter is directly connected with clock module, ensures the synchronism of data sampling, in addition, microprocessor unit establishes connection with these analog digital converters, is used to collect and process the data after conversion, not only improves the speed of signal processing, also guarantees the accuracy of data processing.

[0018] Of course, any product of implementing the utility model does not necessarily need to reach all advantages mentioned above simultaneously. DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing makes a brief introduction, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0020] Figure 1 It is the schematic diagram of element integration distribution on the PCB in the utility model.

[0021] Figure 2 It is the signal acquisition and processing principle block diagram of the utility model.

[0022] Figure 3 It is the clock module principle block diagram in the utility model.

[0023] Figure 4 It is the signal input interface and clock module connection schematic diagram in the utility model.

[0024] In the drawings, the component list represented by each sign is as follows:

[0025] 100, PCB; 101, signal input interface; 102, USB interface; 103, extension interface; 200, clock module; 300, analog-digital converter; 400, microprocessor unit; 500, memory module; 600, analog front-end amplifier; 700, power management unit. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] EMBODIMENT

[0028] Please refer to Figures 1-4 The utility model discloses a kind of signal synchronous acquisition and real-time calibration integrated board card, including PCB 100, the left side edge of the PCB 100 is provided with signal input interface 101, and the central position of the PCB 100 is provided with clock module 200, and is connected with signal input interface 101 by PCB wiring, the right side of the PCB 100 is equipped with multiple analog-digital converters 300, each analog-digital converter 300 is also connected with signal input interface 101 by PCB wiring, and analog-digital converter 300 is also connected with clock module 200, PCB 100 is used for the integrated installation of each element, and its signal input interface 101 is provided with multiple, allow to connect multiple signal sources, and clock module 200 provides stable time reference for the system, ensure the high synchronism of analog-digital converter 300 sampling time instant;

[0029] The top of the PCB board 100 is provided with a microprocessor unit 400, which is connected with the analog-digital converter 300, used for collecting and processing sampled data, and outputs data or further expands functions through the USB interface 102 or the expansion interface 103; the microprocessor unit 400 is provided below with a memory module 500, which is connected through a serial interface, used for storing temporary or long-term data, so that a large amount of collected data can be saved even without external storage devices.

[0030] Specifically, the signal input interface 101 includes a plurality of BNC connectors, which are uniformly distributed along the left edge of the PCB board 100, and the BNC connectors are connected with the analog front-end amplifier 600 through coaxial cables, and the analog front-end amplifier 600 is arranged adjacent to the analog-digital converter 300, which can minimize the signal path length and reduce the risk of noise introduction; the clock module 200 is composed of a temperature-compensated crystal oscillator, and is connected with each analog-digital converter 300 and the microprocessor unit 400 through a plurality of shielded wires, reducing the influence of external interference on the clock signal, thereby improving the accuracy of synchronous signal acquisition.

[0031] The bottom of the PCB board 100 is provided with a power management unit 700 near the edge, which supplies power to the entire board through a power bus, and has independent voltage output ports to supply stable voltage to the clock module 200, the microprocessor unit 400 and the analog-digital converter 300, ensuring the reliability of each part.

[0032] Further, the USB interface 102 is provided at the upper right corner of the PCB board 100, which is connected with the microprocessor unit 400, and the expansion interface 103 is provided at the lower left corner of the PCB board 100, which is connected with the microprocessor unit 400 through input / output pins, and positioning holes for screw installation are provided at the corners of the PCB board 100, which are fixed with external support structures through screws, the USB interface 102 facilitates users to quickly transmit collected data to computers or other devices, and the expansion interface 103 provides additional flexibility, which is convenient for adding more functions according to needs.

[0033] Working principle

[0034] The signal synchronous acquisition and real-time calibration integrated board card is based on an integrated signal synchronous acquisition and real-time calibration system, and multiple elements arranged on the PCB board 100 realize efficient work; specifically, signals first enter the system through the signal input interface 101 (containing multiple BNC connectors) located at the left edge of the PCB board 100, and are transmitted to the analog front-end amplifier 600 through a coaxial cable for pretreatment; then, the signals are transmitted to multiple analog-to-digital converters 300 distributed on the right side of the PCB board 100, where the signals are converted into digital form; during the whole process, the clock module 200 provides an accurate time reference to ensure that each analog-to-digital converter 300 can sample synchronously; the converted data is then sent to the microprocessor unit 400 for further processing and analysis, and the memory module 500 is used for temporary or long-term storage of data; the power management unit 700 ensures stable power supply of the system, so that each component can operate under optimal conditions; finally, the processed data can be exported through the USB interface 102, or more function extensions can be realized by using the expansion interface 103.

[0035] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the above disclosed application are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A signal synchronous acquisition and real-time calibration integrated board card, comprising a PCB board (100), characterized in that, The left side edge of the PCB board (100) is provided with a signal input interface (101), and the central position of the PCB board (100) is provided with a clock module (200) and connected with the signal input interface (101) through PCB wiring, and the right side of the PCB board (100) is provided with a plurality of analog-digital converters (300), each of which is connected with the signal input interface (101) through PCB wiring, and the analog-digital converter (300) is also connected with the clock module (200); The top of the PCB board (100) is provided with a microprocessor unit (400), which is connected with the analog-digital converter (300) and used for collecting and processing sampled data; the microprocessor unit (400) is provided below the memory module (500), and the two are connected through a serial interface.

2. The signal synchronous acquisition and real-time calibration integrated board card according to claim 1, characterized in that, The signal input interface (101) includes a plurality of BNC connectors, which are uniformly distributed along the left side edge of the PCB board (100), and the BNC connectors are connected with analog front-end amplifiers (600) through coaxial cables, and the analog front-end amplifiers (600) are arranged close to the analog-digital converters (300).

3. The signal synchronous acquisition and real-time calibration integrated board card according to claim 1, characterized in that, The clock module (200) is composed of a temperature-compensated crystal oscillator and connected with each analog-digital converter (300) and microprocessor unit (400) through a plurality of shielded wires.

4. The signal synchronous acquisition and real-time calibration integrated board card according to claim 1, characterized in that, The bottom of the PCB board (100) is provided with a power management unit (700) close to the edge, the power management unit (700) supplies power to the entire board through a power bus, and has an independent voltage output port to supply stable voltage to the clock module (200), the microprocessor unit (400) and the analog-digital converter (300).

5. The signal synchronous acquisition and real-time calibration integrated board card according to claim 1, characterized in that, The upper right corner of the PCB board (100) is provided with a USB interface (102), and the USB interface (102) is connected with the microprocessor unit (400).

6. The signal synchronous acquisition and real-time calibration integrated board card according to claim 1, characterized in that, The lower left corner of the PCB board (100) is provided with an expansion interface (103), and the expansion interface (103) is connected with the microprocessor unit (400) through input / output pins.

7. The signal synchronous acquisition and real-time calibration integrated board card according to claim 1, characterized in that, The corner of the PCB board (100) is provided with a positioning hole for screw installation, and the corner of the PCB board (100) is fixed with an external support structure through a screw. The corner of the PCB board (100) is provided with a positioning hole for screw installation, and the corner of the PCB board (100) is fixed with an external support structure through a screw.

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