CN104101424B

CN104101424B - Vibration monitoring method and device and vibration analyzer

Info

Publication number: CN104101424B
Application number: CN201310326028.XA
Authority: CN
Inventors: 窦大明
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-30
Filing date: 2013-07-30
Publication date: 2020-01-24
Anticipated expiration: 2033-07-30
Also published as: CN104101424A

Abstract

The invention relates to a vibration monitoring method, a device and a vibration analyzer, which can shield interference and detect effective vibration by self-defining the magnitude of a vibration signal, namely adjusting set parameters, and provide accurate measurement data or alarm output for the next experiment and analysis. The vibration magnitude of monitoring is adjusted through a software mode, only a vibration collector with higher sensitivity needs to be selected, and the vibration collector does not need to be adjusted, so that the mode is high in efficiency and good in monitoring effect.

Description

Vibration monitoring method and device and vibration analyzer

Technical Field

The invention relates to a vibration monitoring method and device and a vibration analyzer.

Background

The vibration signal acquisition is a mature technology at present, and various vibration acquisition devices acquire vibration signals more and more precisely, process the acquired signals and upload or link related equipment, thereby realizing vibration precaution measures. The technology adopted at present mainly aims at vibration signal acquisition and simple processing, the vibration collector process is accurate, very weak vibration signals can be acquired, the vibration collector can generate a switching value signal when being subjected to vibration, resonance, overturning and the like, the signal is transmitted to a host or an analyzer, and the analyzer is linked with a related alarm device through an amplifying circuit.

The existing vibration collector adopts a closed-circuit working principle, is of a passive structure, and is internally provided with four metal guide rods as shown in figure 1, wherein a conductive metal ball is arranged in the middle of each of the four guide rods, adjacent guide rods are not connected with each other, only two guide columns at opposite corners are connected with one wire to the outside of the collector, and two wires are arranged outside the collector.

The distance between 1 and 2 in the four guide rods is the smallest, the distance between 3 and 4 is the largest, the distances between 1 and 3, and the distances between 2 and 4 are the same, the sensitivity of a vibration signal can be adjusted by adjusting the initial position of the vibration collector, and if the ball is normally positioned between 3 and 4, the ball is most stable and is not easy to roll, and the sensitivity of the collector is the lowest; if the ball is normally located between 1 and 2, the ball is most unstable, and the sensitivity of the collector is highest; if the ball is normally between 1 and 3 or 2 and 4, the sensitivity of the harvester is moderate.

The existing vibration analysis technology has the defects that:

1, inaccurate vibration analysis is caused by insufficient sensitivity of vibration acquisition; improving the collection sensitivity can solve this problem, such as by adjusting the initial position of the vibration collector as described above.

2, the sensitivity of vibration acquisition is too high, interference signals are increased, false alarms are increased, and the vibration analysis is inaccurate; sensitivity needs to be reduced. For example, in a building, not only the wall body but also the door body is provided with a vibration collector, the normal opening and closing of the door belongs to the interference signal of the vibration monitoring system, and the system needs to eliminate the vibration generated by the normal opening and closing of the door, so that the vibration signal generated during the normal opening and closing of the door can be shielded, and the error report is not generated or is generated as little as possible.

From the above analysis, it can be known that, when performing vibration monitoring, the selection of the sensitivity of the vibration collector becomes a big problem that plagues engineering designers, the engineering designers must rely on experience to select a specific collector and its sensitivity, and in specific operations, trial and error are often required to fine-tune the sensitivity of the collector, such as the above-mentioned manner of adjusting the initial position of the collector. In addition, for different walls, the materials and thicknesses are different, the generated vibration effects are different, collectors with different sensitivity levels need to be configured, and the workload is large.

Therefore, the existing mode has low efficiency and poor monitoring effect, and in the later maintenance process, if the sensitivity of the collector is required to be adjusted, the collector needs to be readjusted and arranged, which is very tedious.

Disclosure of Invention

The invention aims to provide a vibration monitoring method, a device and a vibration analyzer adopting the method, which are used for solving the problem of low efficiency of a vibration monitoring mode needing technology.

In order to achieve the above object, the scheme of the invention comprises:

the vibration monitoring method comprises the following steps:

1) detecting an action signal of a vibration collector;

2) processing if the effective vibration times Y exceeds Y0 within the set time Z < Z0; the effective vibration is: the vibration of the vibration collector with the frequency X exceeding X0 is detected in the set period, and X0, Y0 and Z0 are set values. A group of vibration collectors which are arranged in series in a building to be tested form a vibration monitoring loop; and determining that the vibration collector action signal is detected by detecting the disconnection of the vibration monitoring loop. In step 2), the processing is to perform one warning. The X0, Y0 and Z0 are adjusted manually or by software.

Vibration monitoring device, its characterized in that includes: a detection module: detecting an action signal of a vibration collector; a judging module: processing if the effective vibration times Y exceeds Y0 within the set time Z < Z0; the effective vibration is: the vibration of the vibration collector with the frequency X exceeding X0 is detected in the set period, and X0, Y0 and Z0 are set values. The processing is to perform one alarm. The X0, Y0 and Z0 are adjusted manually or by software.

The vibration analyzer comprises a processor, wherein the processor is provided with at least one data acquisition interface. The processor is also connected with a key for setting X, Y, Z value and a display for displaying X, Y, Z value. The processor is also provided with a communication interface which is used for connecting the short message communication module and/or the monitoring center.

The vibration monitoring method of the invention shields interference, detects effective vibration and provides accurate measurement data or alarm output for next experiment and analysis by self-defining the magnitude of the vibration signal, namely adjusting the set parameters. For example, for wall and door vibration, X, Y, Z values generated by normally opening and closing the door can be firstly determined, and then the period is set, and the X0, Y0 and Z0 values are higher than X, Y, Z values which can be reached by normally opening and closing the door, so that the vibration caused by normally opening and closing the door can be shielded. The vibration magnitude of monitoring is adjusted through a software mode, only a vibration collector with higher sensitivity needs to be selected, the vibration collector does not need to be adjusted, the mode is high in efficiency and good in monitoring effect, and the vibration magnitude of monitoring can be adjusted only by modifying parameters in the later maintenance process.

Drawings

FIG. 1 is a schematic diagram of a vibration harvester;

fig. 2 is a schematic diagram of a vibration analyzer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Embodiments of a vibration monitoring method and apparatus

A vibration monitoring device is understood to be a functional component based on a vibration monitoring method. The vibration monitoring method comprises the following steps: 1) detecting an action signal of a vibration collector; 2) processing if the effective vibration times Y exceeds Y0 within the set time Z < Z0; the effective vibration is: the vibration of the vibration collector with the frequency X exceeding X0 is detected in the set period, and X0, Y0 and Z0 are set values.

A group of vibration collectors which are arranged in series in a building to be tested form a vibration monitoring loop; and determining that the vibration collector action signal is detected by detecting the disconnection of the vibration monitoring loop. The vibration acquisition probe adopting a low potential alarm mode is selected, and the working principle of the probe is that when the conductor in the probe is in a conduction state, the probe is normal (namely, the high level and the normally closed state are normal); when the disconnection state of the inner conductor of the probe occurs, the disconnection state is understood to be the disconnection of the circuit caused by vibration (namely, low level, disconnection state alarm). As another embodiment, the monitoring circuit may also adopt a mode that a plurality of collectors in an open state are connected in parallel, and when any collector is in a closed state due to vibration, a signal is sent.

In the step 2), the processing is to perform one warning. As other embodiments, other processes such as recording, transmission, and the like may also be performed. X0, Y0, Z0 can be adjusted manually or by software. The adjustment is numerous and a specific adjustment will be given below.

Vibration analyzer embodiment

The principle of the vibration analyzer is shown in fig. 2, the core is a main board formed by a processor chip, the processor adopts an STC89C52 single chip microcomputer, the processor is provided with at least one data acquisition interface except for a power supply and the like, each data acquisition interface is used for connecting one vibration monitoring loop (as shown in the figure, one loop is external triggering, signal capturing and isolated transmission), and a mode that one data acquisition interface is connected with a plurality of vibration monitoring loops can also be adopted. The processor is also provided with a communication interface which can be accessed to the existing monitoring center (such as a picture isolation transmission, an alarm uploading and a monitoring center) or a short message communication module, and sends related short messages to the mobile phone of a designated person through an SIM card short message mode, wherein all setting, instructions and return information appear in a Chinese short message form (such as a picture SIM card, an antenna and short message receiving and sending).

In order to manually set the vibration magnitude in the field and adjust the vibration magnitudes of X0, Y0 and Z0, the processor is further connected with an input/output device, the input/output device can adopt a touch screen, a keyboard, a display and the like, and the following provides an implementation mode of adopting key contacts as input and adopting a four-digit seven-segment digital tube as output. The nixie tubes are arranged from left to right, the first nixie tube (used for displaying X) on the right conducts preliminary analysis on information collected by the vibration detector, the disconnection times of wall vibration in each time on the vibration detector, which are brought by a closed loop, can be displayed on the nixie tube, the adjustable setting times are from 0 to 9, for example, the setting times are set to 9, the disconnection times of the loop generated by vibration are smaller than 9, automatic shielding is conducted, when the disconnection times are larger than or equal to 9, the disconnection times serve as effective vibration of a first counting position, and the nixie tube carries to a second nixie tube on the left side (used for displaying Y). The second nixie tube is also adjustable, the range is still from '0' to '9', the accumulated information is transmitted by the first nixie tube, for example, the accumulated information is set to '9', after the carry number of the first nixie tube reaches '9', the accumulated information is reported as real information of one vibration, and a switching value signal is output. Thus, a vibration amplitude exceeding "9" is formed, and after nine triggering times of accumulation, vibration information is reported, but the vibration signal is accumulated all the time, and the peak value of "9" is finally reached, so a polling time is set, and then a third digit tube (for displaying Z) is displayed, the setting is adjustable, the range is from "0" to "9", each counting bit represents ten seconds, for example, "9" is set, and represents a polling time of ninety seconds, and in the polling time, if accumulation of the accumulated vibration amplitude exceeding "9" exists, an effective vibration output is triggered. For example, if the value set by the three-digit nixie tube is "999", it indicates that information with a vibration frequency higher than nine is accumulated nine times in a period of ninety seconds, and an alarm is reported.

The alarm needs to send out a notice to the watch keeper or the guard mechanism in time, the notice can be realized in a short message mode, five notice numbers are reserved, and the number of people to be selected is set and informed according to the actual requirement. The setting of the system can be realized in a Chinese short message form, the name of a station can be set to inform a person of addition and deletion, and three prompts of 'vibration alarm', 'system fault' and 'power-off alarm' can be sent out at the time after the addition is successful.

The invention makes up the existing vibration acquisition and analysis technology, acquires the vibration signal source as much as possible, analyzes the acquired signal, inspects and tests according to the actual situation in the field in advance, and additionally sets related parameters; or because the urban construction changes greatly, the distributed and controlled environment is difficult to be free from external influence, and vibration signal processing parameters can be adjusted in real time according to the environmental conditions, so that the vibration distribution is comprehensive, the signal acquisition is complete, the reporting alarm is accurate, and the error report is reduced or eliminated.

Claims

1. The vibration monitoring method is characterized by comprising the following steps:

1) detecting an action signal of a vibration collector;

2) processing if the effective vibration times Y exceeds Y0 within the set time Z < Z0; the effective vibration is: detecting the vibration of the vibration collector with the frequency X exceeding X0 in the set period, wherein X0, Y0 and Z0 are set values; z0 is a set value higher than the time for which vibration is normally caused; y0 is the vibration value caused by shielding the door from normal opening and closing;

in step 2), the processing is to perform one warning.

2. The vibration monitoring method according to claim 1, wherein a group of vibration collectors arranged in series in the building to be tested form a vibration monitoring loop; and determining that the vibration collector action signal is detected by detecting the disconnection of the vibration monitoring loop.

3. The vibration monitoring method according to claim 1, wherein the X0, Y0, Z0 are adjusted manually or by software.

4. Vibration monitoring device, its characterized in that includes:

a detection module: detecting an action signal of a vibration collector;

a judging module: processing if the effective vibration times Y exceeds Y0 within the set time Z < Z0; the effective vibration is: detecting the vibration of the vibration collector with the frequency X exceeding X0 in the set period, wherein X0, Y0 and Z0 are set values; z0 is a set value higher than the time for which vibration is normally caused; y0 is the vibration value caused by shielding the door from normal opening and closing; the processing is to perform one alarm.

5. The vibration monitoring device of claim 4 wherein the X0, Y0, Z0 are adjusted manually or by software.

6. A vibration analyzer employing the method of claim 1, comprising a processor, wherein the processor is provided with at least one data acquisition interface.

7. The vibration analyzer of claim 6, wherein the processor is further coupled to a button for setting X0, Y0, Z0 values and a display for displaying X, Y, Z values.

8. The vibration analyzer of claim 6, wherein the processor is further provided with a communication interface for connecting a short message communication module and/or a monitoring center.