CN213397352U - Extensible user-defined array data acquisition instrument based on MEMS system - Google Patents

Abstract

The utility model relates to an extensible self-defined array data acquisition instrument based on MEMS system, this acquisition instrument include the main casing body and set up the multiunit MEMS digital microphone that is used for gathering the noise in the main casing body, be connected with every group MEMS digital microphone respectively and be used for carrying out a plurality of singlechips that the lightweight was handled to the noise signal data of gathering and be used for realizing receiving noise signal data and the interactive operation terminal of instruction after the lightweight was handled through communication bus and a plurality of singlechip communication respectively. Compared with the prior art, the utility model has the advantages of the cost is with low costs, and the flexibility is good, and the limitation is little, has fine practicality etc.

Description

Extensible user-defined array data acquisition instrument based on MEMS system

Technical Field

The utility model belongs to the technical field of electric power industry noise signal acquisition technique and specifically relates to a self-defined array data acquisition instrument of extensible based on MEMS system is related to.

Background

At present, in the operation process of an electric power system, a noise array data acquisition instrument is required to be used for acquiring noises in the operation process of the electric power system so as to analyze the characteristics of the noises and avoid the influence on the operation speed, the accuracy and the stability of power grid data.

The MEMS is a high-tech device with the size of several millimeters or less, the internal structure of the MEMS is generally in the micron or even nanometer level, the MEMS is an independent intelligent System and mainly comprises three parts, namely a sensor, an actuator (actuator) and a Micro energy source.

Most of the existing custom array data acquisition systems are composed of traditional microphones and acquisition card increasing cases, and meanwhile, the matched control software is used for data acquisition, so that corresponding equipment is expensive in manufacturing cost, large in size and incapable of being rapidly expanded.

Therefore, there is a need for an extensible custom array data collector based on MEMS system to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an extensible self-defined array data acquisition instrument based on MEMS system in order to overcome the defects that above-mentioned prior art exists.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides an extensible self-defined array data acquisition instrument based on MEMS system, this collection appearance includes the main casing body and sets up the multiunit MEMS digital microphone that is used for gathering the noise in the main casing body, be connected with every group MEMS digital microphone respectively and be used for carrying out the multiple-chip microcomputer that the lightweight was handled to the noise signal data gathered and communicate with multiple-chip microcomputer through communication bus respectively and be used for realizing receiving noise signal data and the interactive operation terminal of instruction after the lightweight was handled.

Each group of MEMS digital microphones comprises 3-5 MEMS digital microphones, wiring holes of each group of MEMS digital microphones are distributed on the left side panel of the main shell, and the wiring holes are orthogonally distributed.

The MEMS digital microphone is internally provided with an AD converter.

The multiple single-chip microcomputers are synchronized by adopting a synchronous clock so as to realize multichannel expansion.

The extensible custom array data acquisition instrument further comprises a power supply for supplying power to the single chip microcomputer.

This collection appearance still includes the camera that is used for gathering the detection image, the camera install on the front panel of the main casing body to be connected with the singlechip, this camera is industry CCD camera.

The operation terminal is an industrial personal computer, a smart phone or an upper PC.

The singlechip model be ARM STM32 singlechip, main casing body rear panel on be equipped with the power hole of being connected with the power respectively, the net twine hole of being connected with the singlechip and be used for the USB interface of communication.

The communication bus adopts UART and USB communication interfaces.

When the extensible self-defined array data acquisition instrument is used for acquiring noise signal data, the MEMS digital microphone acquires noise, analog signals are converted into digital signals through the built-in AD converter, the digital signals are transmitted to the single chip microcomputer to be subjected to light weight processing and then are transmitted to the operation terminal, and real-time acquisition of field noise signals is completed.

Compared with the prior art, the utility model has the advantages of it is following:

the extensible self-defined array data acquisition instrument is small in size, low in power consumption and more efficient in acquisition efficiency compared with a common signal acquisition system, and therefore the purpose of a light acoustic signal acquisition device is achieved.

The extensible custom array data acquisition instrument mainly comprises an MEMS digital microphone with an AD converter, a singlechip, a communication bus, a power supply and an operation terminal, and has the advantages of low manufacturing cost, good flexibility, small limitation and good practicability;

the extensible user-defined array data acquisition instrument can use a plurality of single chip microcomputer modules to carry out communication connection, synchronizes clocks, can carry out extension of acquisition channels, can be extended to hundreds of channels, can independently operate each module or operate on line, can be extended as required, and is wide in application range.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic view of a first viewing angle structure.

Fig. 3 is a second perspective structural view.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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.

The utility model overcomes the problem that the collection system volume that current acoustic signal collection device set formed is great, the flexibility is relatively poor, collection efficiency is comparatively low, provide an extensible self-defined array data acquisition instrument based on MEMS system, have advantages such as small, the low power dissipation and equipment cost are cheap, compare in ordinary signal acquisition system collection efficiency more high-efficient, as shown in figure 2 and 3, this extensible self-defined array data acquisition instrument based on MEMS system includes a square main casing body and sets up the functional components and parts inside the main casing body, the side of this main casing body is seted up the microphone data wiring hole (3 in this example) of a plurality of quadrature arrangements, be used for realizing being connected with MEMS digital microphone and extension, be equipped with the camera (CCD camera in this example) that is used for gathering the detection image in the front of main casing body, the rear panel at the main casing body is equipped with USB interface, The power supply hole and the network wire hole realize information communication with the outside, four anti-skidding support legs are further arranged at the bottoms of the subject and the object, an anti-skidding handle is further arranged at the top of the subject and the object, and a rainproof sun-proof baffle plate can be additionally arranged when necessary.

The inside functional components and parts of main casing specifically include:

the MEMS digital microphone is used for collecting noise, and in the embodiment, the MP34DT01MEMS digital microphone is selected;

the single chip microcomputer is used for carrying out light weight processing on noise signal data acquired by the MEMS digital microphone, and an ARM STM32 single chip microcomputer is adopted in the embodiment;

the communication bus is used for transmitting signal data subjected to lightweight processing by the single chip microcomputer, and a UART (universal asynchronous receiver/transmitter) and a USB (universal serial bus) communication interface are adopted in the embodiment;

and the operation terminal is used for receiving signal data subjected to lightweight processing by the singlechip and performing instruction interaction with the communication bus, and can be an industrial personal computer, a smart phone or an upper PC.

The single chip microcomputer is adopted for data acquisition, so that the acquisition instrument is further light, the size of the acquisition instrument is reduced, and the acquisition task can be completed by a very small number of peripheral devices.

More specifically, the MEMS digital microphone is internally provided with the AD converter, so that AD conversion at the acquisition instrument end is not needed, the size and the cost of the acquisition instrument end are effectively reduced, signals can be directly preprocessed and integrated by the acquisition instrument, and data delay is reduced.

And the single-chip microcomputers are subjected to clock synchronization, so that the consistency of the acquired data is ensured.

The custom array data acquisition instrument also comprises a lithium ion battery serving as a power supply and used for supplying power to the single chip microcomputer.

The utility model discloses in, when using this extensible self-defined array data acquisition instrument to gather noise signal data, the MEMS digital microphone of built-in AD converter is gathered the noise, and turn into digital signal to analog signal through built-in AD converter, and spread into the singlechip and carry out the lightweight and handle the back and spread into operation terminal, this extensible self-defined array data acquisition instrument component device is small, low power dissipation, compare in ordinary signal acquisition system collection efficiency more high-efficient, furthermore, the cost is with low costs, the flexibility is good, and the limitation is little, therefore, has fine practicality.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (9)

1. The utility model provides an extensible self-defined array data acquisition appearance based on MEMS system, its characterized in that, this collection appearance includes the main casing body and sets up the multiunit MEMS digital microphone that is used for gathering the noise in the main casing body, be connected with every group MEMS digital microphone respectively and be used for carrying out the multiple-chip microcomputer that the lightweight was handled to the noise signal data of gathering and communicate with multiple-chip microcomputer through communication bus respectively and be used for realizing receiving noise signal data and the interactive operation terminal of instruction after the lightweight was handled.

2. The apparatus of claim 1, wherein each set of MEMS digital microphones comprises 3-5 MEMS digital microphones, and the wiring holes of each set of MEMS digital microphones are arranged on the left side panel of the main housing, and the wiring holes are arranged orthogonally.

3. The apparatus of claim 2, wherein the MEMS digital microphone is embedded with an AD converter.

4. The apparatus of claim 1 wherein the plurality of singlechips are synchronized using a synchronous clock to achieve multi-channel expansion.

5. The apparatus of claim 1, further comprising a power source for powering the single-chip microcomputer.

6. The data collector of claim 1, further comprising a camera for collecting the inspection image, wherein the camera is mounted on the front panel of the main housing and connected to the single chip, and the camera is an industrial CCD camera.

7. The extensible custom array data acquisition instrument based on the MEMS system as claimed in claim 1, wherein the operation terminal is an industrial personal computer, a smart phone or an upper PC.

8. The data acquisition instrument of the extensible customized array based on the MEMS system as claimed in claim 1, wherein the type of the single chip microcomputer is ARM STM32 single chip microcomputer, and the rear panel of the main shell body is respectively provided with a power supply hole connected with a power supply, a network wire hole connected with the single chip microcomputer and a USB interface for communication.

9. The apparatus of claim 1 wherein the communication bus is UART and USB communication interface.

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