CN219347954U

CN219347954U - Signal transmitting module for measuring vibration signals

Info

Publication number: CN219347954U
Application number: CN202223331531.8U
Authority: CN
Inventors: 赵孟珂
Original assignee: Zhengzhou Emeas Sensor Technology Co ltd
Current assignee: Zhengzhou Emeas Sensor Technology Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-07-14
Anticipated expiration: 2032-12-13

Abstract

The utility model provides a signal transmitting module for vibration signal measurement, which is characterized in that an interface circuit module is connected with an acceleration sensor, a filter circuit module carries out filtering processing on acceleration signals acquired by the acceleration sensor, a double-integration circuit module converts the acceleration signals into speed signals and displacement signals, a signal selecting module selects one of the acceleration signals, the speed signals and the displacement signals to enter an AD (analog-to-digital) conversion module, and the AD conversion module converts the acceleration signals or the speed signals or the displacement signals into digital signals which are input into an MCU (micro control unit) for analysis and processing. The beneficial effects are that: the utility model has high integration level, small volume, low power consumption and rich functions, can be integrated in on-line monitoring instruments, portable vibration detection instruments and wireless vibration sensors, reduces the research and development cost of enterprises and shortens the product development period of the enterprises.

Description

Signal transmitting module for measuring vibration signals

Technical Field

The utility model relates to the field of vibration measurement, in particular to a signal transmission module for vibration signal measurement.

Background

The vibration signals are collected and processed to analyze the vibration state of the object or equipment to be detected, and the running state of the object or equipment to be detected is monitored in real time, fault diagnosis and accident early warning are carried out. Vibration testing includes two aspects: the vibration of the working machine or structure in the working state is measured, such parameters as vibration displacement, speed, acceleration, frequency, phase and the like are required, the vibration state rating level of the measured object is known, the vibration source is found, and monitoring, analysis, diagnosis and prediction are performed. The vibration quantity is measured by a mechanical method, an electrical method, an optical measurement method and the like, and parameter signals such as displacement, speed, acceleration and the like of equipment are detected by using a vibration sensor at present, the physical quantity is output through an electric signal, and then data is analyzed and processed by an upper computer or a vibration analysis instrument, so that real-time monitoring and early warning diagnosis of the equipment are facilitated.

The measuring field of vibration signals has the characteristics of high technical requirements, high signal analysis difficulty, high signal processing difficulty and higher professional requirements. The vibration signal belongs to a small signal, the acquisition difficulty is high, and meanwhile, the frequency range of the vibration signal for analysis is often wider, which further brings trouble to the design of an acquisition and processing circuit.

Disclosure of Invention

The utility model provides a signal transmitting module for measuring vibration signals based on at least one of the technical problems.

A signal transmission module for vibration signal measurement, comprising: the device comprises an acceleration sensor, an interface circuit module, a filter circuit module, a double-integration circuit module, a signal selection module, an AD conversion module and a power supply circuit module, wherein the interface circuit module is connected with the acceleration sensor, the filter circuit module filters acceleration signals acquired by the acceleration sensor, the double-integration circuit module converts the acceleration signals into speed signals and displacement signals, the signal selection module selects one of the acceleration signals, the speed signals and the displacement signals to enter the AD conversion module, the AD conversion module converts the acceleration signals, the speed signals or the displacement signals into digital signals, the digital signals are input into an MCU (micro control unit) for analysis and processing, and the power supply circuit module supplies power for each circuit module.

Furthermore, the type of the acceleration sensor connected with the interface circuit module is an IEPE type piezoelectric acceleration sensor.

Further, the filter circuit module is a band-pass filter composed of a second-order chebyshev high-pass filter and a second-order chebyshev low-pass filter.

Furthermore, the double-integration circuit module comprises two integrators, and converts the acceleration signal into a speed signal and a displacement signal.

Still further, the signal selection module is ADG706 from ADI corporation.

Still further, the AD conversion module is LT1864 of the lingter company.

Still further, the power circuit module comprises a 5V to + -15V circuit module and a 5V to 2.5V reference circuit module for powering each circuit module.

The beneficial effects are that: the signal transmitting module for measuring the vibration quantity has the advantages of high integration level, small volume, low power consumption and rich functions, can be used independently, can be integrated in equipment such as an on-line monitoring instrument, a portable vibration detection instrument or a wireless vibration sensor, reduces the research and development cost of enterprises, and shortens the product development period of the enterprises.

Drawings

FIG. 1 is a block diagram of the structure of the present utility model;

FIG. 2 is a general schematic of the present utility model;

FIG. 3 is a schematic diagram of an interface circuit of the present utility model;

FIG. 4 is a schematic diagram of a filter circuit module of the present utility model;

FIG. 5 is a schematic diagram of a dual integrating circuit module of the present utility model;

FIG. 6 is a schematic diagram of a signal selection module of the present utility model;

fig. 7 is a schematic diagram of an AD conversion module of the present utility model;

fig. 8 is a power circuit module of the present utility model.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

As shown in fig. 1 to 8, a signal transmission module for vibration signal measurement includes: the interface circuit module is connected with the acceleration sensor, and the type of the acceleration sensor is IEPE piezoelectric acceleration sensor; the filter circuit module carries out filtering treatment on the acceleration signals acquired by the acceleration sensor, and the filter circuit module is a band-pass filter consisting of a second-order chebyshev high-pass filter and a second-order chebyshev low-pass filter; the double-integration circuit module converts the acceleration signal into a speed signal and a displacement signal, and comprises two integrators for converting the acceleration signal into the speed signal and the displacement signal; the signal selection module selects one of an acceleration signal, a speed signal and a displacement signal to enter the AD conversion module, and the signal selection module is an ADG706 of an ADI company; the AD conversion module converts the acceleration signal or the speed signal or the displacement signal into a digital signal, inputs the digital signal into the MCU for analysis and processing, and is LT1864 of Lingte company; the power circuit module comprises a 5V-to- + -15V circuit module and a 5V-to-2.5V reference circuit module for supplying power to each circuit module.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A signal transmission module for vibration signal measurement, comprising: the device comprises an acceleration sensor, an interface circuit module, a filter circuit module, a double-integration circuit module, a signal selection module, an AD conversion module and a power supply circuit module, wherein the interface circuit module is connected with the acceleration sensor, the filter circuit module filters acceleration signals acquired by the acceleration sensor, the double-integration circuit module converts the acceleration signals into speed signals and displacement signals, the signal selection module selects one of the acceleration signals, the speed signals and the displacement signals to enter the AD conversion module, the AD conversion module converts the acceleration signals, the speed signals or the displacement signals into digital signals, the digital signals are input into an MCU (micro control unit) for analysis and processing, and the power supply circuit module supplies power for each circuit module.

2. The signal transmission module for vibration signal measurement according to claim 1, wherein the acceleration sensor to which the interface circuit module is connected is an IEPE type piezoelectric acceleration sensor.

3. The signal transmitting module for vibration signal measurement according to claim 1, wherein the filter circuit module is a band-pass filter composed of a second order chebyshev high-pass filter and a second order chebyshev low-pass filter.

4. The signal transmitting module for vibration signal measurement according to claim 1, wherein the double-integration circuit module includes two integrators for converting acceleration signals into velocity signals and displacement signals.

5. The signal transmission module for vibration signal measurement according to claim 1, wherein the signal selection module is ADG706 of ADI corporation.

6. The signal transmitting module for vibration signal measurement according to claim 1, wherein the AD conversion module is LT1864 of the lingter company.

7. The signal transmission module for vibration signal measurement according to claim 1, wherein the power circuit module comprises a 5V to ± 15V circuit module and a 5V to 2.5V reference circuit module to power each circuit module.